PowerBook G4 display problems

A friend f mine wants me to fix her powerbook screen for her, problem is, I don't know if it is the screen itself, or the graphics card (maybe even the inverter, but most likely not). The symptom is the bottom third of the screen is solid whit, or solid black, if you press the screen/near the screen just right, it goes back to normal (which makes me think it is the screen). Anybody have a diagnoses?

sHEED-ra-
You may have better luck posting in the appropriate PowerBook forum.
It is not to say you won't find help here but this forum is dedicated to displays as connected to a Power mac G5.
Luck-
-DaddyPaycheck

Similar Messages

Powerbook 3400 display problem.

Everything was fine yesterday. But today, the 3400 had a new problem. The display has raised up (half an inch) and I can no longer see the top menu bar. The bottom half inch is black.
So far, I have tried the following:
Checked the appearance control panel to make sure a picture is not covering anything.
Checked display settings.
Enabled 9.1 base extension set.
Trashed any preference files that were modified between yesterday and today.
Zapped the pram and rebuilt the desktop.
Ran First aid from start up CD.
None of that helped, so I performed a clean install back to OS 9.04. and the problem still remained. Next, I opened the unit up and removed the keyboard. Then, removed the brightness and speaker grill and reseated the ribbon connections and pressed down firmly. All to no avail,
so I initialized the drive and again did a clean install, but that did not work either.
This forum has saved the 3400 in the past, and hopefully it can save it again. As always, any help is greatly appreciated. Thank you.
Powerbook 3400c 180 with 48 mb Mac OS 9.1.x
Powermac G4, Powerbook 3400c Mac OS X (10.3.3)

Hello Tom:
Thanks for the excellent suggestions. Unfortunately, it failed to correct the problem. I really appreciate your efforts.
Best regards, Ace
Powermac G4, Powerbook 3400c Mac OS X (10.3.3)
Powermac G4, Powerbook 3400c Mac OS X (10.3.3)
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Powerbook 160 Display Problems...!

Alright, here's the Deal:
I have a Powerbook 160 I just bought from a Yard sale, and one off of eBay. Yes, it's another couple of powerbooks! Just last summer I bought a 180 with a dead drive which I regret throwing out. It turns out that the one from the yard sale was having problems with the screen, and every few seconds I need to adjust the contrast to see the screen better. after about 5 minutes, it goes wild and just keeps getting brighter and darker. That's why I bought the other one from eBay.
It belonged to some dude in Oregon, and seemed to have gotten upgraded sometime around 1995-1996. I could tell because when I opened it up, it had a 240MB hard drive with a 1994 copyright on it. Later investigation showed a 1995 copyright on the 8MB ram chip that was attached. The one from the yard sale belonged to a Math teacher at a high school in a neighbouring town. It was kept pretty simple, and had a 65.8MB hard drive with Clarisworks and stuff on it. I decided the best thing to do was to fuse them together to make a working one. Really all I did was replace the keyboard, mouse, and display with those from the yard sale laptop. This was because the display in the one form eBay ws messed up, the kayboard was sticky and the bottom button on the trackball mouse didn't work. But the screen problems remained.
I did a little more investigation, and found it to be the blue-colored brightness and contrast controller chip inside. This was really the main reason for fusing them together.
If anyone has any information on how to acquire another one of these (not used), it would be of great help. I plan on using this laptop for word processing among other things such as either setting it up as a terminal or perhaps updating my internet blog with it. Please help!
~~The Wishmkr

UPDATE
The flat wire between the screen and the logic board just ripped. I'm gonna need one of those too.

Powerbook G$ display problems

Hi all
I'm actuallu posting this on behalf of someone. They have a powerbook g4 and the display keeps going black. It isn't a sleep issue as i've checked all the settings and they're ok. The screen only goes back to normal after pressing return a couple of times. It might be a connection problem. Any ideas?
Thanks

Hi-
Welcome to Discussions!
Just so you get the proper help that you need, best to try a post in the Powerbook forum:
http://discussions.apple.com/category.jspa?categoryID=120
This is the Desktop tower forum, and everyone has different areas of interest/expertise.

User data causing display problems?

I had a user on an iBook whose display was completely washed out. The image was so white and there was so little detail that it was mostly unreadable.
So, I did a fresh load of 10.4 onto an older Powerbook G4 that had no issues, and I used the Setup Assistant to transfer over his all of his User Data, settings, and applications.
As soon as the Powerbook rebooted, it had inherited the display problem!
A fresh install on the iBook shows that the display is now fine. Somehow, this problem is travelling with the user's data, settings, and applications.
I've played with the display and color settings, but they have no effect on the problem.
The only unusual application that he was running was some "Ding!" app from Southwest Airlines.
Any idea where to look to hunt down this problem?

Check the contrast setting in the Universal Access pane of System Preferences; this setting can cause what you describe.
(15278)

Color display problem...

Hello everyone, i've got a little display problem for one month approximatively on my powerbook G4 : i can see little stripes in colors ranges... For an example, on the page dedicated to the sneak peak of Leopard, the big "X" has a range from black to grey, well, what i see on my screen is the same thing that you, but with stripes of a different color : the range isn't linear...
I have check my monitor preferences, the resolution is good and the colors ar selected to "millions"... The colorimetric profile is good too... So i can't see where does this problem could come from...?
I even try to solve the problem reinstalling the system, but il still here...
It's hard to explain online, but i hope you can see what i mean and you'll be able to help me.
Thanks by advance !
Mac OS X (10.4.8)

Let us know if this helps you Synchronize color settings across Adobe applications.

Help needed identifying display problem

I have a 17 inch Powerbook G4. I saw that a lot of people have got display problems and unfortunately I have too. Hopefully you can help me figure out what’s exactly wrong so I can try to fix it!
Here are the symptoms:
The upper third of the display is working fine.
The middle and lower third of the display are darker / faded and flicker a bit at around 20/30 hertz. (But this part is backlit, only a lot less)
No other symptoms, also the grey part isn’t deformed)
What I would like to know is, if someone can tell me if this is the Logicboard / Inverterboard or the Display itself.
Thanks in advance for your help!!

I have run several tests. Nothing seems to be wrong with video memory or so. The external display port produces a fine image on an external monitor too.
I have made some pictures of what the screen looks like:
http://www.renessance.nl/powerbook/display01.jpg
http://www.renessance.nl/powerbook/display02.jpg
http://www.renessance.nl/powerbook/display03.jpg
http://www.renessance.nl/powerbook/display04.jpg
http://www.renessance.nl/powerbook/display05.jpg
The bad part is harder to read, doesn't get really black and flickers @ 60hz or so.
So I'm still wondering if it's the inverterboard or display itself.
Your help is really appreciated!

Wierd lines on my display and frequent lock-ups w/ and w/o display problems

When booting I sometimes get weird lines and blocks on my display (the GRAY Apple screen) and then it hangs, other times the computer will boot and run fine for 20-30 minutes and then the display goes wonkers with blocks and lines and the computer does not respond. The only way I can get it to boot is to reset the PRAM by letting it CHIME 3x and then occasionally it will boot without issue and run, while other times I still get the blocks and lines on the display.
When I am able to get it to recover and re-boot after the lock-up and display problems and occasionally the box in the middle asking me to re-boot similar to a kernel panic the OPS gives me the option to REPORT the error and here is the error for others who would know more...
Thank you in advance,
Darren
Interval Since Last Panic Report: 104960 sec
Panics Since Last Report: 5
Anonymous UUID: 7D1AEF43-7E19-4F58-A1E0-48FA992A2814
Wed Nov 18 15:49:50 2009
panic(cpu 0 caller 0x9cdb10): NVRM[0/1:0:0]: Read Error 0x00009410: CFG 0xffffffff 0xffffffff 0xd2000000, BAR0 0xd2000000 0x5d3e2000 0x084700a2, D0, P1/4
Backtrace (CPU 0), Frame : Return Address (4 potential args on stack)
0x5c99b7d8 : 0x21b2bd (0x5cf868 0x5c99b80c 0x223719 0x0)
0x5c99b828 : 0x9cdb10 (0xbb7fec 0xc209c0 0xbc3660 0x0)
0x5c99b8c8 : 0x147690d (0x8b5ac04 0x7edf004 0x9410 0xabd962)
0x5c99b908 : 0x1534e6a (0x7edf004 0x9410 0x5c99b968 0x9)
0x5c99b948 : 0xb51ca5 (0x7edf004 0x91ed004 0x0 0x0)
0x5c99b968 : 0xac155b (0x91ed004 0x5c99baa4 0x0 0x0)
0x5c99b9b8 : 0x145f290 (0x7edf004 0x3d0900 0x5c99baa4 0x0)
0x5c99bad8 : 0xab2821 (0x7edf004 0x91cf004 0x815200c 0x200)
0x5c99bb18 : 0xb1f172 (0x7edf004 0x91cf004 0xeb9bcc0 0xeb9bc04)
0x5c99bbc8 : 0xb202db (0x7edf004 0x91f0404 0x0 0x0)
0x5c99bc58 : 0x14bb7a3 (0x7edf004 0x91f0404 0x9 0x2)
0x5c99bd68 : 0x14ed407 (0x7edf004 0x91cf404 0x0 0x0)
0x5c99be98 : 0xad3934 (0x7edf004 0x91ca404 0x0 0x0)
0x5c99bec8 : 0x9d61fb (0x7edf004 0x91ca404 0x0 0x0)
0x5c99bf08 : 0x5491b5 (0x0 0x9499680 0x1 0x29c50a)
0x5c99bf58 : 0x5481e6 (0x9499680 0x1 0x5c99bf88 0x547d9d)
0x5c99bf88 : 0x548640 (0x8abaf00 0x7e9ecc0 0xe780850c 0x2a6e5f)
0x5c99bfc8 : 0x29d68c (0x8abaf00 0x0 0x10 0x88bbfc4)
Kernel Extensions in backtrace (with dependencies):
com.apple.nvidia.nv50hal(6.0.6)@0x136b000->0x17f1fff
dependency: com.apple.NVDAResman(6.0.6)@0x96f000
com.apple.NVDAResman(6.0.6)@0x96f000->0xc21fff
dependency: com.apple.iokit.IOPCIFamily(2.6)@0x932000
dependency: com.apple.iokit.IONDRVSupport(2.0)@0x961000
dependency: com.apple.iokit.IOGraphicsFamily(2.0)@0x943000
BSD process name corresponding to current thread: kernel_task
Mac OS version:
10C540
Kernel version:
Darwin Kernel Version 10.2.0: Tue Nov 3 10:37:10 PST 2009; root:xnu-1486.2.11~1/RELEASE_I386
System model name: MacBookPro3,1 (Mac-F4238BC8)
System uptime in nanoseconds: 3788331456483
unloaded kexts:
com.apple.driver.AppleFileSystemDriver 2.0 (addr 0xf02000, size 0x12288) - last unloaded 94521475551
loaded kexts:
org.virtualbox.kext.VBoxNetAdp 2.2.2
org.virtualbox.kext.VBoxNetFlt 2.2.2
org.virtualbox.kext.VBoxUSB 2.2.2
org.virtualbox.kext.VBoxDrv 2.2.2
com.bresink.driver.BRESINKx86Monitoring 5.0
com.pctools.iantivirus.kfs 1.0.1
com.apple.driver.AppleHWSensor 1.9.2d0 - last loaded 31800108689
com.apple.filesystems.ntfs 3.1
com.apple.filesystems.autofs 2.1.0
com.apple.driver.AppleHDA 1.7.9a4
com.apple.driver.AirPort.Atheros 412.19.4
com.apple.kext.AppleSMCLMU 1.4.5d1
com.apple.driver.SMCMotionSensor 3.0.0d4
com.apple.DontSteal_Mac_OSX 7.0.0
com.apple.driver.AudioIPCDriver 1.1.2
com.apple.driver.AppleIntelMeromProfile 19
com.apple.driver.ACPISMCPlatformPlugin 4.0.1d0
com.apple.driver.AppleLPC 1.4.9
com.apple.driver.AppleBacklight 170.0.14
com.apple.driver.AppleUpstreamUserClient 3.1.0
com.apple.GeForce 6.0.6
com.apple.driver.AppleUSBTrackpad 1.8.0b4
com.apple.driver.AppleUSBTCKeyEventDriver 1.8.0b4
com.apple.driver.AppleUSBTCKeyboard 1.8.0b4
com.apple.iokit.SCSITaskUserClient 2.6.0
com.apple.BootCache 31
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0d1
com.apple.iokit.IOAHCIBlockStorage 1.6.0
com.apple.iokit.AppleYukon2 3.1.14b1
com.apple.driver.AppleAHCIPort 2.0.1
com.apple.driver.AppleSmartBatteryManager 160.0.0
com.apple.driver.AppleIntelPIIXATA 2.5.0
com.apple.driver.AppleUSBHub 3.8.4
com.apple.driver.AppleFWOHCI 4.4.0
com.apple.driver.AppleUSBEHCI 3.7.5
com.apple.driver.AppleUSBUHCI 3.7.5
com.apple.driver.AppleEFINVRAM 1.3.0
com.apple.driver.AppleRTC 1.3
com.apple.driver.AppleHPET 1.4
com.apple.driver.AppleACPIButtons 1.3
com.apple.driver.AppleSMBIOS 1.4
com.apple.driver.AppleACPIEC 1.3
com.apple.driver.AppleAPIC 1.4
com.apple.security.sandbox 0
com.apple.security.quarantine 0
com.apple.nke.applicationfirewall 2.1.11
com.apple.driver.AppleIntelCPUPowerManagementClient 96.0.0
com.apple.driver.AppleIntelCPUPowerManagement 96.0.0
com.apple.driver.DspFuncLib 1.7.9a4
com.apple.driver.AppleProfileReadCounterAction 17
com.apple.driver.AppleProfileTimestampAction 10
com.apple.driver.AppleProfileThreadInfoAction 14
com.apple.driver.AppleProfileRegisterStateAction 10
com.apple.driver.AppleProfileKEventAction 10
com.apple.driver.AppleProfileCallstackAction 20
com.apple.iokit.IOFireWireIP 2.0.3
com.apple.iokit.IO80211Family 310.6
com.apple.iokit.IOSurface 73.0
com.apple.iokit.IOBluetoothSerialManager 2.2.4f3
com.apple.iokit.IOSerialFamily 10.0.3
com.apple.iokit.IOAudioFamily 1.7.2fc1
com.apple.kext.OSvKernDSPLib 1.3
com.apple.driver.AppleHDAController 1.7.9a4
com.apple.iokit.IOHDAFamily 1.7.9a4
com.apple.iokit.AppleProfileFamily 41
com.apple.driver.AppleSMC 3.0.1d2
com.apple.driver.IOPlatformPluginFamily 4.0.1d0
com.apple.nvidia.nv50hal 6.0.6
com.apple.NVDAResman 6.0.6
com.apple.iokit.IONDRVSupport 2.0
com.apple.iokit.IOGraphicsFamily 2.0
com.apple.driver.CSRUSBBluetoothHCIController 2.2.4f3
com.apple.driver.AppleUSBBluetoothHCIController 2.2.4f3
com.apple.iokit.IOBluetoothFamily 2.2.4f3
com.apple.iokit.IOUSBHIDDriver 3.8.4
com.apple.driver.AppleUSBMergeNub 3.8.5
com.apple.driver.AppleUSBComposite 3.7.5
com.apple.iokit.IOSCSIMultimediaCommandsDevice 2.6.0
com.apple.iokit.IOBDStorageFamily 1.6
com.apple.iokit.IODVDStorageFamily 1.6
com.apple.iokit.IOCDStorageFamily 1.6
com.apple.driver.XsanFilter 402.1
com.apple.iokit.IONetworkingFamily 1.9
com.apple.iokit.IOATAPIProtocolTransport 2.5.0
com.apple.iokit.IOSCSIArchitectureModelFamily 2.6.0
com.apple.iokit.IOAHCIFamily 2.0.2
com.apple.iokit.IOATAFamily 2.5.0
com.apple.iokit.IOUSBUserClient 3.8.5
com.apple.iokit.IOFireWireFamily 4.1.7
com.apple.iokit.IOUSBFamily 3.8.5
com.apple.driver.AppleEFIRuntime 1.3.0
com.apple.iokit.IOHIDFamily 1.6.1
com.apple.iokit.IOSMBusFamily 1.1
com.apple.kext.AppleMatch 1.0.0d1
com.apple.security.TMSafetyNet 6
com.apple.driver.DiskImages 281
com.apple.iokit.IOStorageFamily 1.6
com.apple.driver.AppleACPIPlatform 1.3
com.apple.iokit.IOPCIFamily 2.6
com.apple.iokit.IOACPIFamily 1.3.0
Model: MacBookPro3,1, BootROM MBP31.0070.B07, 2 processors, Intel Core 2 Duo, 2.2 GHz, 4 GB, SMC 1.16f11
Graphics: NVIDIA GeForce 8600M GT, GeForce 8600M GT, PCIe, 128 MB
Memory Module: global_name
AirPort: spairportwireless_card_type_airportextreme (0x168C, 0x87), Atheros 5416: 2.0.19.4
Bluetooth: Version 2.2.4f3, 2 service, 0 devices, 1 incoming serial ports
Network Service: AirPort, AirPort, en1
PCI Card: pci168c,24, sppci_othernetwork, PCI Slot 5
Serial ATA Device: ST9320421ASG, 298.09 GB
Parallel ATA Device: MATSHITADVD-R UJ-857E
USB Device: Built-in iSight, 0x05ac (Apple Inc.), 0x8502, 0xfd400000
USB Device: Apple Internal Keyboard / Trackpad, 0x05ac (Apple Inc.), 0x021a, 0x5d200000
USB Device: Bluetooth USB Host Controller, 0x05ac (Apple Inc.), 0x8205, 0x1a100000
Anyone know what is causing my problems? I thought it was heat so I downloaded a CPU and FAN temperature monitor and the CPU was getting VERY HOT at first so I then ramped-up the CPU FAN SPEED to maximum - it turns out the CPU FAN was not rotating well at low speed - since then I have cleaned and checked the fans and they all work as they should and blow on high(er) when the CPU temperature is above a certain level.

S.U.
Is there a kb article or something that would illuminate what to look for in these logs, or is it a matter of learning by osmosis?
Both. I am not skilled in reading logs. It is a very technical and time consuming task for the uninitiated (me!) In scanning a log I look for the backtrace and loading dependencies. The first item in the backtrace is usually the roadblock.
Beyond that you can look at the Technical Note TN2063: Understanding and Debugging Kernel Panics
Should make for good bedtime reading. Puts you right to sleep.
c

Display Problem with RowHeader of a Scroll Pane

Hi,
I am trying to display row headers for a table using another table
Here is the code
import javax.swing.*;
import javax.swing.table.*;
public class RowNumberHeader extends JTable {
protected JTable mainTable;
public RowNumberHeader(JTable table) {
    super();
    mainTable = table;
    setModel(new RowNumberTableModel());
    setRowSelectionAllowed(false);
    JComponent renderer = (JComponent)getDefaultRenderer(Object.class);
public int getRowHeight(int row) {
    return mainTable.getRowHeight();
class RowNumberTableModel extends AbstractTableModel {
    public int getRowCount() {
      return mainTable.getModel().getRowCount();
    public int getColumnCount() {
      return 1;
    public Object getValueAt(int row, int column) {
      return new Integer(row + 1);
}and then
        JTable displayTable = new JTable(...);
        scrollPane = new JScrollPane(displayTable);
        JViewport jvp = new JViewport();
        jvp.setView(new RowNumberHeader(displayTable));
        scrollPane.setRowHeader(jvp);the problem I have is that when a row is selected inside the row header, some rows go blank and you can see the selection is all screwed up. I tried setting the selection mode to ListSelectionModel.SINGLE_SELECTION but that didn't help.
A refresh of the entire screen (minimize/maximize) seems to resolve the problem. I am using jdk1.4.1 in Windows 2000.
Any ideas?
Sylvain

Again the problem is that when you click on the row headers, some row header rows go blank (completely white) so you can't see what they show.
ie say I have table
Row 1 - 1 2 3
Row 2 - 2 4 5
Row 3 - 5 7 7
Row 4 - 5 6 7where Row X is the row header. So for example, if you click on Row 2, you will get something like
Row 1 - 1 2 3
Row 2 - 2 4 5
      - 5 7 7
Row 4 - 5 6 7until the screen is refreshed or you click some other row header.
hmm ok, I added calling repaint on the table whenever a row is selected and at least the display problem goes away; however, the selected indexes from the event don't always match the index of the row selected. I think actually that may be the source of the display problem.
Here is the code I added in the constructor:
        getSelectionModel().addListSelectionListener(new ListSelectionListener()
            public void valueChanged(ListSelectionEvent e)
                System.out.println("Header table selection is: First = " + e.getFirstIndex() +
                                   " Last = " + e.getLastIndex());
                RowNumberHeader.this.repaint();
        });

Macbook and HP 2510i monitor display problem - help

Hello,
I am having display problem with my Macbook (Intel) and my 25'' HP 2510i monitor via DVI.. Until last monday I do not have any problems and my monitor was working flawless with my macbook.. Last monday I used the monitor with my HP Notebook to try Windows 8 on large screen. And after that try when I connect the monitor back to Macbook there is no display.. I tried the steps below
- I connected Macbook to my Phillips Plasma TV and it worked (no error with display card of Macbook or the wire or the adaptor)
- I connected the monitor back to HP laptop it worked.. (so no error with the monitor)
- I unplugged monitor to cut electricity and tried.. nope not working
- I did several tricks with macbook no effect
- I reinstalled Mountain Lion .. no effect
- I formatted Macbook, reinstalled Snow Leopard.. Not working.. I installed back Mountain Lion .. not working
Whatever I tried the HP2510i is not displaying, mirroring my Macbook..
Any help will be appreciated
Thanks

My graphic card details;
NVIDIA GeForce 9400M:
Chipset Model:          NVIDIA GeForce 9400M
Type:          GPU
Bus:          PCI
VRAM (Total):          256 MB
Vendor:          NVIDIA (0x10de)
Device ID:          0x0863
Revision ID:          0x00b1
ROM Revision:          3462

My original post, locked by this forum. Display problem related

Hi G5 Gurus,
The display problem first, we all know when screen savers display, a click on the mouse will bring you back to the active desktop, this was how it worked., but now, sometimes a click cause the G5 to sleep!
As for the sleep, I dare not to put it to sleep these days, because I am afriad it may cause a fire by over heating. Sometmes, actually four times in the past few months, my G5 could wake up by itself, followed by a extrem high speed running of the cooling fan, it sounded like a hair dryer running in the same room. Sometimes the sreen could light up, just like real wake up, sometimes, it was black. No clicks the mouse or keyboeard could bring it back to normal, I had to press and hold the power button to turn it off.
This crazy problem happened for the first time last summer, a dead hard disk was the cost. Apple replaced it, but failed to detect the cooling or power or display problem. I was given one month extended free service, but right after its end, the problem was back and happened even more often.
Please let me know if any of you had the same problem and please advise what to do.
100s Gs of thanks.
Songyan
iMac G5 Mac OS X (10.4.8)
la teller
Posts: 1
From: Los Angeles
Registered: Jan 10, 2007
Re: What's the problem? Display? Power supply? Cooling? My G5's gone mad
Posted: Jan 10, 2007 2:21 PM in response to: Bad luck G5
I have the EXACT same problem. In fact, I could not have described it better myself. What gives? I brought it in to the "genius" bar and they repolaced the power supply free of charge but the problem is still there. I noticed they ordered a new logic board but did not end up replacing it after all. Did you have yours replaced and did it work? Is this a known issue?
imac G5 17 inch Mac OS X (10.3.9)
Bad luck G5
Posts: 8
From: UK
Registered: Jan 10, 2007
Re: What's the problem? Display? Power supply? Cooling? My G5's gone mad
Posted: Jan 11, 2007 1:20 PM in response to: la teller
Hi La teller,
Thank you for your reply. The 'genius' here in London only replace the dead hard disk, which I belive was a victim of this problem. I was told they couldn't find anything wrong with the power supply or the cooling system.
Now at lest I know I am not the only bad luck guy. Let's wait and see if others are having the same problem. I am not sure if this is a known issue to Apple, even if it is, it may take years before they can offer a recall or free repaire. I noticed that some G5s have already been suffering from power problems and a free repaire was offered.
Thank you again and hope Apple can take our concerns into their consideration soon.
Songyan
iMac G5 Mac OS X (10.4.8)
stopha6
Posts: 1
From: US
Registered: Jan 12, 2007
Re: What's the problem? Display? Power supply? Cooling? My G5's gone mad
Posted: Jan 12, 2007 7:43 AM in response to: Bad luck G5
Hello,
I'm also having this problem (fan running, won't come out of sleep), just spoke with an apple care rep. He confirmed my suspition that it was software, not hardware as I have just had the logic board and power supply replaced.
His suggestions were to:
1. Run disk repair from the startup CD
try running OS X from a firewire drive and see if the same behavior happens or
perform and archive and install.
When the fan starts to run like that it means the OS is not communicating with the hardware properly. The OS could be somewhat corrupt if you were having hardware issues beforehand, hence the need for a reinstall. I will be performing an archive and install after the disk repair, I'll let you know if it fixes the problem!
iMac G5 Mac OS X (10.4.8)
Bad luck G5
Posts: 8
From: UK
Registered: Jan 10, 2007
Re: What's the problem? Display? Power supply? Cooling? My G5's gone mad
Posted: Jan 14, 2007 12:52 PM in response to: stopha6
Hi Stopha6,
Thank you for your message. I never imagined it could be a software issue, cos it looked so hardware.
Please keep me updated with your progress.
By the way, as I said in my old posts, a hard disk went dead when this happened for the very first time, how do you read this?
Thank you.
Songyan
iMac G5 Mac OS X (10.4.8)
Bad luck G5
Posts: 8
From: UK
Registered: Jan 10, 2007
Re: What's the problem? Display? Power supply? Cooling? My G5's gone mad
Posted: Jan 15, 2007 6:58 AM in response to: stopha6
Hi Stopha6,
After reading your reply again, I realized that the system had already been reinstalled. As I said when it happened for the first time, the hard disk died with it, which was replaced, of course with a new OS X, but the same problem is still happening. May this suggest that it is not just a software problem? Thank you. Songyan
iMac G5 Mac OS X (10.4.8)
AG-Nate
Posts: 5
From: Pismo Beach,CA
Registered: Aug 26, 2006
Re: What's the problem? Display? Power supply? Cooling? My G5's gone mad
Posted: Jan 14, 2007 3:38 PM in response to: Bad luck G5
The Fans going at full is only because you have an application that is using a lot of cpu power and therefore causing the imac to heat up so it turns the fans on. The screen-saver and sleep problem you describe sounds like something that may just happen on accident. But this sounds mostly like a software problem. Try making sure to always quit all non-apple products and see if anything changes.
eMac, iMacG5 Mac OS X (10.4.7) 800mhz 1gig ram, 2ghz 2gigs of ram
Bad luck G5
Posts: 8
From: UK
Registered: Jan 10, 2007
Re: What's the problem? Display? Power supply? Cooling? My G5's gone mad
Posted: Jan 15, 2007 6:50 AM in response to: AG-Nate
Thank you, Ag-Nate. I will try as you adivised but I con't think the fans were activeted my intensive CPU using. In most of the cases, the problems happened when the Mac was sleeping, when the minimum CPU were being used.
iMac G5 Mac OS X (10.4.8)
Timothy Klein
Posts: 15
From: Denver, CO, USA
Registered: Dec 6, 2004
Re: What's the problem? Display? Power supply? Cooling? My G5's gone mad
Posted: Jan 31, 2007 1:02 PM in response to: AG-Nate
"The Fans going at full is only because you have an application that is using a lot of cpu power and therefore causing the imac to heat up so it turns the fans on."
That's only partly right. A hard-working process will make the fans run at high speed, of course.
But, the OS is in touch with the firmware of the iMac, telling it how to run the fans, based upon information the OS X kernel is getting about the state of the hardware.
If the firmware loses touch with the OS for some reason, and is not getting instructions on how to run the fan, it will default to running them at full blast, to be on the safe side (and this "full blast" fan mode is way louder than anything you'll generally experience during normal usage, I know from experience).
So it may not be so simple as a hard-working cpu process kicking the fans on.
iMac G5 17" 1.6 GHz Rev. A Mac OS X (10.4.8) 1 GB Ram
Kensall
Posts: 2
From: London, England
Registered: Feb 2, 2007
Re: What's the problem? Display? Power supply? Cooling? My G5's gone mad
Posted: Feb 2, 2007 9:05 AM in response to: Timothy Klein
Hi I have a 20" G5 imac it's about 18 months old and I am having the same problem, It freezes and the fan runs really loud. It's nothing to do with software as my I.T. guy has done a complete re-install. All of our admin people have imacs of differring ages and the flat panels are all OK but every one of the G5s has had a booting problem. Some fell into the recall for replacement logic boards but the one I have at home is the newest and doesn't. I'm waiting for my apple reseller to get back to me, but it looks like it's the logic board and as none of the serial numbers fall into the recall, I'm expecting a big bill. I'm really disappointed as I've been a professional apple user for over 15 years and have grown to expect a certain amount of honesty and integrity from them. Looking at all of the discussion boards and the amount of people complaining of the same problem the logic boards are defective and apple should be replacing these free of charge.
i mac G5 Mac OS X (10.4.8)
a brody
Posts: 15,170
From: Silver Spring, Maryland. Don't forget to backup your data!
Registered: Dec 23, 2000
Re: What's the problem? Display? Power supply? Cooling? My G5's gone mad
Posted: Feb 2, 2007 10:27 AM in response to: Kensall
Kensall,
Welcome to Apple Discussions!
As in the other thread I wrote:
Being from England, you may find the repair program under these pages:
http://www.apple.com/uk/support/imac/repairextensionprogram/
http://www.apple.com/uk/support/imac/powersupply/repairextension/
Check both of them as they refer to different models.
If neither of yours is under the program, please start a new topic thread so someone can help you.
http://discussions.apple.com/forum.jspa?forumID=881
First off, you'll get a wider audience who may be able to solve your problem. Secondly, responses to you won't confuse the original poster with solutions that don't apply to them. And thirdly, you'll know for certain whether or not a response applies to you.
iMac C2D 2.17/20 inch/iMac G5 1.8 1st gen/iMac G4 800 Mac OS 9 Mac OS X (10.4.8) EyeTV 200, Canon PS A530 , Epson P-R220, iSight, Airport Extreme, 5th Gen iPod

I am having a very similar problem. My G5 imac has already had the logic board replaced from the leaking capacitor problem. 8 mos. later the power supply was replaced under the second recall program when it failed to start up.
It had been working now for almost a year, when about 3 mos. ago I started to experience the sudden dimming effect - if the display was untouched the screen would dim about 30% similar to a laptop in energy save mode. I checked and none of these types of options were set in the pref panes. At the same time I would have the iMac go to sleep after a while from non-use, and then when I tried to wake it it would stir for a few seconds and then go right back to sleep. It took 2-3 attempts to wake it up.
Then last week, as I tried to wake it, it just shut down instead completely. I had to hold the power button down to recycle it to get it to come back to life (3 times).
Today was it - I found what I thought was a sleeping iMac, but it will not power up at all. I opened the back cover and the power supply is working, but I cannot get the board to energize, I reset the PMU, but the #2 LED won't even blink. It is completely dead.
Basically every time I used this computer I held my breath that it would not work. After 2 recalls I still only get 9 mos. out of it? Apple is really starting to show it is like the "big" computer makers, the quality is going right down the tubes.
iMac G5 Mac OS X (10.4.4)

Why is netflix having display problems on my macbook pro... HDCP compliance?

Watching Netflix and all of a sudden it says "Display Problems" Make sure your monitor is HDCP Compliant and is not setup for mirror airplay??

The issue is from Safari defaulting to HTML5 vs using Silverlight like it did in Mavericks.
So the options are, if you want to use Safari goto your Netflix account, playback preferences and turn off HTML5. This will revert to Silverlight and will AirPlay fine*in Safari.
If you want to use HTML5, just leave the setting for HTML5 on in Netflix and use Chrome, Firefox, etc.
You can't currently have both Safari and HTML5 Netflix when using AirPlay. You'd think Safari would be a little bit more powerful with Apples stances on browser extensions.

Display Problem with my Mac Pro and LG Flatron Wide Monitor in Mountain Lion

After upgrading to Mountain Lion, my Mac Pro has display problems with my LG Flatron display. The image is displayed with a black bar on the right and on the bottom. And the left side of the content is not visible. I tried every resolution available in the Display System Preferences, they are different in terms of how big the black bars are, and what part is not visible, but none of them are correct. I held down the option key to try to detect displays or switch to resolutions that are not normally available. When I restart the image is lined up with the display, but if the display ever goes to sleep or gets turned off, the image reverts to being off center, and the only way I can get it back is to restart... The interesting thing is that this monitor works fine with the same machine if I reboot using BootCamp into Windows 7. The Monitor also works fine, connecting the same connector to a Mac Mini, although that mac mini is running 10.6 and not Mountain Lion. I've reset the SMC and restarted countless times, I don't see any other levers to pull or things to try...

That card is for a PC it may not give you Startup and Option-Boot screens.
The 7950 "Mac Edition" card has a very distinctive look:
http://www.sapphiretech.com/presentation/product/product_index.aspx?cid=1&gid=3& sgid=1157&pid=1777&psn=&leg=0&lid=1

Weird event display problem in week view

Hi. I'm getting a weird display problem in week view. First time this has ever happened.
Some events appear to be missing, but when i double click on where I know the event is supposed to be, a new event is created (as excepted), and the missing events suddenly appear. When i move forward or back by a week, and then return to the week in question, the missing events are gone again. But, I can see the missing events in day view or month view.
Any ideas?

Dean,
Next, try reinstalling the Mac OS X v10.6.2 Update (Combo).
If that is unsuccessful:
1. Use iCal>Export...>for each one of your individual calendars.
2. Delete all but one of your calendars.
3. Create a calendar and name it "Test."
4. Delete the calendar which remained after step #2.
5. Quit iCal.
6. Remove the iCal plist, and drag the iCal plist file to your Desktop.
7. Log out/in or restart.
8. Restart iCal and use iCal>File>Import...for each one of the calendars that you exported in step #1.
9. Delete the "Test" calendar, and any "Home/Work" calendar which was automatically created when you opened iCal in step #8.
;~)

Windows 7 64 bit on iMac display problems and instability

I received my iMac 27" quad core with 8 gig ram & 2 x 1 TB hard drives last Friday. I'm using Boot Camp to run windows 7 64 bit on maximum 2560 x 1440 screen resolution.
I get intermittent but often display problems in windows 7. I get areas of the screen covered in little yellow dots or blue squares (never red artefacts.) This will happen at random areas of the screen, inside an open window, around borders of windows and so on. Most often the screen will go black and come back with a message in the bottom right corner of the screen saying 'Display driver has stopped responding and has recovered' with the sub message saying 'display driver ATI radeon family stopped....etc'. Sometimes I lose the screen wallpaper. Once I've had the system just shut down, once I've had Photoshop seize up and I had to do a cold reboot. Could this be an overheating problem or resolution too high problem or driver problem? Windows 7 tells me my drivers are up to date. I tried installing the drivers for the card from ATI's website which made no difference
The reason I bought a Mac is because it's the only effective way to code for the Mac family of OS's in XCode. The reason I didn't just attach a miniMac to my PC monitor was because there's rather a lot of advertising by Apple about the fact that you can use a Mac with a PC OS via Apple's own Boot Camp. Now I have a lot of Windows software (some of which is not available for the Mac or requires buying again) sitting on an unstable system. Any ideas would be much appreciated...

Sorry, that thread got moved for edit and as a user tip... which I didn't want and won't be doing....
Here is the post:
A tip and workaround for how to get ATI mobility/laptop drivers so that Windows no longer thinks the ATI is a desktop card:
http://discussions.apple.com/thread.jspa?messageID=11286987
Summary (my own edit steps):
1. Install Boot Camp 3.0 and upgrade to 3.1
2. Uninstall graphic drivers and run Driver Sweeper
http://www.guru3d.com/category/driversweeper/
instead of:
removing the crashing driver by going into windows 7 setup via its install cd and deleting the ati driver manaully
3. Install ATI Mobility (link)
4. Uninstall ATI (Programs control panel?) Device Manager (rollback; uninstall?)
5. Device Nanager: update driver and BROWSE BACK to 8.681 (the original apple driver that was causing freezes and purple artifacts) - navigate to /Apple/Drivers/ATI
(Apple uses) a 4850 card in the iMac, its modified a bit for apple. Enough that desktop drivers don't work, and modded-for-laptop desktop drivers don't work either.
Now the upshot of using modified drivers is that it FORCES the catalyst control panel to be installed, meaning you get a few more options to mess around with the card.
I couldn't use the original apple drive, it locks up, the newer one had banding, the newer radeon drivers direct form ATI wouldn't work until they were modded and then they cause black screens.
SO the solution, as obscure as it was, was to download ACTUAL mobility Radeon drivers - version 10.3 still, but made for laptops.
http://support.amd.com/us/gpudownload/Pages/index.aspx
THESE drivers I was able to install - and here is where things changed.
THIS driver changed they way windows saw the video card in device manager.
As I mentioned before, its NOT a desktop card, its a modified laptop card, but installing mac drivers makes windows THINK its a full desktop card, and running the original 8.681 driver crashed it.
Once installed 10.3 LAPTOP driver it now appeared in device manager as a MOBILITY card.
+These Steps "should" work:+
delete ATI driver manually
reinstall apple driver after that and see if that works,
otherwise try the steps above
(mod drivers, remove via windows recovery off setup disk, install laptop drivers, reinstall apple driver over it)

PowerBook G4 display problems

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