My Imac G5 screen is devoid of Red Tones

Rarely it will flick onto full color spectrum for about 2 minutes. Then it reverts back to green, blue, greys.
The computer doesnt seem to know it is only showing shades of green and blue. This has gone on for about 2 months. Earlier this year, before this problem, I had new hard drive put in.
I am ready to fix this. I follow advice well, but I won't ditch my mac. There is no better off with newer mac option here.
Message was edited by: LaDeja

Go to System Preferences and check the amount of time you have set for the screen and/or the drive to sleep.

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IMac LCD screen replaced, Blue Screen startup

Hi there, I just had the LCD screen replaced on my late 2007 Aluminum iMac today (due to a permanent red vertical streak) by an Applecare certified technician. He did a meticulous job with the replacement, and the iMac booted up just fine afterwards. About an hour later, though, I tried starting up the iMac and after the grey screen with the Apple logo it gets stuck on a blue screen with a constantly spinning pinwheel.
Now I tried everything, booting up in Safe Mode, Single User Mode, resetting the PRAM, FSCK, Disk Utility using Disk Repair, unplugging the power cord for 30 seconds, etc. and nothing seems to work. It just gets stuck on a blue screen whenever it tries to boot up.
Just wanted to see if there is anything else I could try out before I give Apple a call tomorrow, if this boot up problem is a result of the new LCD screen replacement or what? Any help or insight in the matter would be greatly appreciated, thanks.
Update: I should note that right now I'm in the (lengthy) process of restoring from a Time Machine save to see if that helps out in any way.

You could try the following first, but a repair may be required.
iMac G5: Fails to startup (From an article at MacFixit)
Some users are reporting an issue where iMac G5s fail to properly startup -- apparently at a hardware level -- never reaching the Mac OS X startup splash screen (Apple logo with a spinning progress indicator).
Note that in cases where the system does reach the Mac OS X startup splash screen or further progression but stalls, software issues may be to blame.
Potential fixes
Disconnect external devices External devices -- especially those that draw power from the system -- can cause issues with startup that manifest either at the beginning of or later in the boot process. Try temporarily any external FireWire or USB devices then re-attempt startup and check for persistence of the issue.
Reset SMU Although this workaround was not successful in Connors' case, resetting the iMac G5's SMU (system management unit) as described in Apple Knowledge Base article #301733 can resolve a variety of power-related problems, including sudden-onset startup failure.
Check power cables Check your power cord for a loose connection. As noted in the aforementioned reader case, unplugging and re-plugging the power cord can sometimes result in a successful startup -- likely the result of a more snug fit.
Also, power cables can become defective or ship in such a state.
Try exchanging the power cable from a problematic machine with a system that starts up properly to eliminate this as a potential cause.

My battery drained. Screen shows battery with red line but doesn't seem to be recharding after 20 min. Should I wait or do a hard restart? I haven't backedup in ages and don't want to lose pics, contacts etc.

My battery drained. Pluged in to wall but screen shows battery with red line but doesn't seem to be recharding after 20 min. Should I wait longer or do a hard restart? I haven't backedup in ages and don't want to lose pics, contacts etc. Will a hard restart wipe all that out?

Agree with Richard:
-Your device needs both the CR and LF. To accomplish this:
option 1: Concatenate the "end of line" string constant (this is a combination of CR and LF, located in the string pallete) to all your outgoing commands. Make sure in the "Visa configure serial port" the "Termination character enable" flag is false.
option 2: Concatenate only a CR to your command's strings. Make sure in the "Visa configure serial port" the "Termination character enable" flag is TRUE AND that the termination character is set to 10 (meaning LF) which I think is the default.
Details can be seen in this link:
http://digital.ni.com/public.nsf/allkb/862567530005F09C862565BE005AB500
"Adding Termination Characters to VISA Serial Writes in LabVIEW"
Interesting would be to configure the serial port to accept not one but two termination characters. The above links refers to the document "Developer Zone Tutorial: Termination Characters in NI-VISA.", where this is supposed to be possible. The document however is 404'ed.
If someone find a working link please post it.
Regards

Upgraded to Yosemite and can no longer remote into my work iMac through screen sharing- it is turned on in settings?

My screen sharing functionality did not show up in the dock with an updated icon. It had a question mark- shows my connections but nothing works, I did make sure screen sharing is on and also connected to VPN. Once I tried to launch screen sharing nothing happens. Such an elegant solution in Mavericks not does not work. Ugh. Help!

This is the post that got me set up- I too am running an older version at work vs. Yosemite. As soon as I followed is advice everything worked.
Upgraded to Yosemite and can no longer remote into my work iMac through screen sharing- it is turned on in settings?
I believe the location of the "Screen Sharing" app has changed, which explains why if you had it in the dock it has been replaced by a ?
Don't forget you can launch screen sharing (once your VPN connection is up) by typing in the Safari destination slot vnc://remotemachinename:portnumber (omit the :port number if you are using the default VNC port, 5900). This should launch Screen Sharing and put its icon in the dock. You can drag the Screen Sharing icon to the left of your dock and it will hopefully remain there after you exit Screen Sharing, or you can right-click on the icon when it's running and select Options->Show in Finder to find out its new location and drag its icon to the permanent entries in your dock.
Hope this helps; worked for me.

Screen is suddenly flashing red and purple, whats up?

screen is suddenly flashing red and purple, whats up?

Octopus Chef-
I think you will need the services of an iPad repair center. If you search for an independent iPad repair center, the cost of a non-warranty repair should be less than at the Apple Authorized Repair Centers.
One thing you can try is to reset (reboot) your iPad. Hold both the Home and Sleep buttons for several seconds until the Apple logo appears. Ignore the "Slide to power off" arrow. The iPad will restart after a couple of minutes. Resetting this way will not hurt anything, and sometimes clears up mysterious problems.
Fred

Please Help: iMac black screens after startup logo + spinning wheel no cursor).

Hi, guys.
I'm in a fair bit of a desperate situation; my iMac's screen seems to shut down every time after the white startup screen. The Apple logo appears, & the progress wheel begins spinning, then after a while - when it would usually then go to the gray login screen - it would, instead, go black. I can tell that the machine is still on (I can still hear it clicking as it does during processing) but I'm unable to determine anything else. Nothing is visible on the screen - not even the cursor - it's as if the display had turned off completely. I'm not sure if the login screen sits beneath that black screen (I have tried to log on by typing my login details in blindly, but even if it does log in, it's hard to determine what state the computer is in without seeing the screen.
I have tried the PRAM reset (holding CMD+OPT+P+R) during both the white startup screen, & the black screen to no avail. It seems unresponsive because I don't hear any additional chimes that I've been told should be heard during a PRAM reset attempt. I can't even be sure that the command is being inputted correctly because the light on my wireless keyboard remains off during the process.
I've tried rebooting over & over again; the results are the same.
The steps that led to the problem occurred thusly:
1 - I was trying to clear some memory from my current session, so I scanned through my active processes, quitting anything which seemed to be eating up considerable amounts of memory.
2 - One particular process I quit was 'launchd' which was functioning under my profile username.
3 - After quitting launchd, all opened apps seemed to close, & it looked like I was forcibly logged off the machine. The screen froze during this point, & I decided to do a hard reboot to log back in.
4 - The problem began after this hard reboot; startup seemed to occur as per usual; white screen > apple logo > progress wheel > and then suddenly, a black screen where the login screen should be.
I've shown a flashlight into the screen while it's black & it seems well & truly like the display has shut down while the iMac continues in the background. I have had issues relating to my screen going black before, but they were random & intermittent; they didn't occur without fail during the exact same time immediately after startup, & could be remedied by using the CTRL+OPT+EJT keys.
I am on an iMac 2010, 27", using I believe Lion OSX. I am unable to recall additional specifications while the problem persists.
Could anybody please help me? I'm quite desperate; I was in the middle of some urgent work that I need to get back to as soon as possible.
Thank you I'm advance to anyone with advice on how I can go about fixing this.
,c.

Gray screen appears during startup

IMac 27 screen went blank installing snow leopard

My iMac 24 screen went blank installing snow leopard. Should I wait? I wish this **** machine ha a HDD light like a PC.

You can attempt to reset the PRAM in the machine, but it looks as though there's a hardware problem. It's actually kind of difficult to determine if it's the graphics hardware or the mainboard, but neither are really servicable. You'll want to take it to get serviced.

IMac 27inch screen shutoff

hi my iMac 27inch screen shutoff automatically. Sometimes I can wake the screen up again but sometimes I can't. Sometimes the screen just turns back on after a few minutes. I sent it back to the place I bought it. They say the either the motherboard or the screen is broken. I have to pay something around 800 dollars to repair it. It almost half price of the computer. Is there any other solution to my problem?

Only if they are wrong about the screen or motherboard being broken.
How old is it? And you did not get apple care when you bought it?
Had you gone to system preferences>energy saver and adjust the time before the screen sleeps?
The "turns back on" kind of is a bad sign for you though... Sorry I am unable to help at ALL.

New iMac 27inch screen flickering/tearing/shutoff (continued)

This thread is a continuation of [New iMac 27inch screen flickering/tearing/shutoff|http://discussions.apple.com/thread.jspa?threadID=22 12682]. The thread was becoming too long and was causing some browsers to time out. The older thread has been locked.

citrus101 wrote:
Hi Brett L,
thank you for the coordination of this helpful thread. Are you Apple? If yes, please allow me to ask you three questions:
1) The Display Firmware stopped for over 90% the flicker issue, but what has this Firmware changed exactly?
2) Is Apple preparing a fix for the yellow tinge?
3) When will it be save to buy a new iMac?
Thank you for your efforts.
Hello Citrus.
Excellent questions.
I hope that Apple will authorize Brett L. to provide us with some clear, honest answers to them . . . although, as I pointed out before, it would seem by the latest messages that have been posted in this thread -- that is, the *original thread* -- that through their actions, Apple has already provided us with their answer -- and solution -- to the yellow tinge issue; and that is the replacement of the LCD panel.
As to what the most recent display firmware update did, I am doubtful that Apple will allow Brett to reveal that kind of information, but we can be hopeful.
As far as when it will be safe to purchase a new iMac, I seriously doubt that Apple will say anything which would suggest that it is not safe to purchase a new iMac now. What company is going to say "Don't buy our product now. It's not safe"?
For my part, I have now contacted Apple regarding the issues that I am having with my 27" iMac, and I will wait over the next few days to see how things play out. Based on the testimonies of others here, I don't expect Apple to disappoint. I have the confidence that they want to leave me a satisfied customer who will continue to purchase their products in the future.
Message was edited by: Warren Beasley

IMac G5 Screen Cracked!

My iMac G5 screen was cracked when my son threw a toy at it while throwing a fit. Some of the old background is still visible, but most of the screen is dominated by wierd colors and designs. Is it possible to get this fixed? If so, how do I go about doing it?
iMac G5

Hi,
I don't know if it is going to be cost effective for you to have your screen replaced. I've seen some posts here at the forum quoting prices in the $600+ range.
You might want to call Apple Service, I'm sure they have a standard price for replacing display. I would try to figure out how you can back up your data. I believe you can also add a 'second monitor' but you would have to do all the configs and if your screen isn't working that's nearly impossible...
Rick
iMac G5 iSight 20" - 30G iPOD in Slimming Black - Mac OS X (10.4.7) - HP Pav 15" WS and Toshiba Sat 17" WS LP's - Canon 20D & A620

My iMac computer screen is blurred by black and white lines.

My iMac G5 screen is blurred by black and white horizontal lines and tiny rectangles. This occured after I woke it up from sleeping. Everything else seems to be working fine, but is impossible to see what I'm doing. Any ideas on how to fix this?

Fixed it! Rebooting the computer while holding down the command, option, P and R keys while letting the chime ring 4 or 5 times did the trick.

My iMac 17" screen turn black, any one able to provide solutions

My iMac 17" screen turn black when I relocation the computer, any one can provide solutions, thanks

Hello, Bernardneoh.
Thank you for visiting Apple Support Communities.
Here is a troubleshooting article that I would recommend going through when experiencing this issue.
Apple computers: Troubleshooting issues with video on internal or external displays
http://support.apple.com/kb/ht1573
Cheers,
Jason H.

Just wondering what Apple's stand is on the issue with a flickering and a dark area appearing on imac 27"screen - forums seem to indicate this is not uncommon - and happens through normal use - so should be subject to repair (Sale of Goods Act - 6 years)

Just wondering what Apple's stand is on the issue with a flickering and a dark area appearing on imac 27"screen - forums seem to indicate this is not uncommon - and happens through normal use - so should be subject to repair (Sale of Goods Act - ie 6 year warranty)

We are just users like yourself. If Apple has stated publicly about the problems you mentioned, it will be listed on their website and/or in one of their Knowledge Base Articles.
I have a 27" & do not suffer from such a problem. You should keep in mind that these are technical support forums. Generally, the only people posting here are those with problems. The thousands/millions without problems don't ever come here.
Think of these forums as a hospital emergency room.

Imac 2012. screen goes dark in the middle of working.

while working on the imac the screen goes dark. to turn it back on hittingseveral keys and short tap on in/off button. after trying vsarious things it turns abck on and then happens againg. like its going into sleep mode intentionally? any ideas?

iMac (27-inch): AMD Radeon 6970M Video Card Replacement Program

My grandson was playing with my iPad 1. The screen is tinged with red, blurry, never seen this before, nor do I know how to fix it.

My 4 yr. old grandson played with my iPad yesterday. When I picked it up late last night, the screen had a red haze throughout. The clarity of every screen is tinged in red wavy lines, and bright red appears at the top of the screen. I have no idea what he has done. I need help for sure.

He might have dropped or banged the iPad hard causing a hardware problem.
First thing to try is to reset your device. Press and hold the Home and Sleep buttons simultaneously until the Apple logo appears. Let go of the buttons and let the device restart. See if that fixes your problem.
Some people have found that giving the iPad a hard slap on the back cures the red tint problem. But it usually is a hardware failure. Make an appointment at an Apple Store to have your device examined by a technician. Or contact Apple Support.

My Imac G5 screen is devoid of Red Tones

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