T400 adapter causes lcd screen to become really dark

I turned on my computer like usual from hibernation and the screen went completely dark, almost black. At the time I thought the screen just blacked completely out (like it does, or so I think it does sometimes) because I saw the harddrive icon remain green.
Anyway, like usual, when that happens I force shut down my computer, restarted it and all was fine and well on the logo screen, but the screen following it and onwards I can barely see the screen (ex: the screen that shows the processor info, vista startup, then the welcome screen). I tried increasing the display brightness but it doesn't alter it in any way.
I later realized that my computer works just fine on battery-only but there's a problem when I use the adapter. I also tried altering my screen refresh rate for the adapter through the power manager but it cannot be changed, so I changed my power settings to the default setting. Both my battery and my adapter has the same refresh rate of 50hz.
Another thing, I can apparently use my adapter only if I keep my display setting on the lowest screen brightness available, but when I try to increase the brightness, it goes back into nearly-black screen mode and stays like that.
What could be the problem?

it is hard to say what is causing it, without proper set of tools to do the diagnostic.
You could try a new adapter or a known working adapter.
Do you still have warranty?
Regards,
Jin Li
May this year, be the year of 'DO'!
I am a volunteer, and not a paid staff of Lenovo or Microsoft

Similar Messages

The screen has become very dark

first time poster looking for some help. today the computer went to sleep, and when i woke it up the screen had become very dark, barely visible. adjusting the brightness did not work, neither did restarting the computer. after reading a number of these posts i elected to reset the pmu. i suspect that it worked because a window opened stating that the date was now prior to sometime in 2001, but the screen remains dark. does anyone have any other suggestions to fix this problem? thank you in advance.

Try System Preferences>Universal Access and then choose Seeing. Adjust the Enhance Contrast Slider, try putting it near Normal.
Hope this helps.

Wireless adapter causing blue screen

Hello,About a month ago on my Lenovo Ideapad Z580, I was using the internet when it said I was no longer connected. When I tried troubleshooting, it reset the wireless connection adapter and gave me a blue screen. When it restarted and I tried troubleshootingt it again, it enabled the adapter and worked fine. Since that first time, this BSOD has happened every day, sometimes multiple times a day, but not everytime I am on the internet. I have tried doing a system restore at a few different points, but the restore always ends in an error. I checked at the driver for the wireless adapter is up to date. Please advise on what I can do to fix this problem. Thank you,Stephanie

The symptoms you describe could be symptomatic of a variety of things to include hardware/software issues, overheating caused by a failed processor fan, bad memory (RAM), failing or underpowered power supply, CPU overheating, motherboard, video card, faulty or unsigned device drivers, CMOS battery going bad, BIOS and firmware problems, dirty hardware components, programs hanging or unresponsive in the background, and even malware. If the computer is overheating, it usually begins to shutdown/restart on a more regular basis.
If the machine is only crashing at home after establishing a connection but not at work when establishing a connection, then its probably an issue with your network configuration or something (i.e. wireless adapter) causing a conflict and not a malware issue.
The DRIVER_IRQL_NOT_LESS_OR_EQUAL error is usually due to a bad driver or faulty/incompatible hardware or software. This error condition means that a kernel-mode process or driver tried to access a memory location to which it did not have permission, or at a kernel Interrupt ReQuest Level (IRQL) that was too high.

What is making my macbook pro crash and causing the screen to become distorted?

I've posted before and thought my problem was solved. Thanks to the folks who helped. I'm still having the problem with certain programs causing my screen to split in two and become distorted. Sometimes I'm able to force quite and others I'm not. Just a few days ago, I tried to run iPhoto. The screen did the crazy distorted thing and the computer crashed. The screen locked up and I had to hard boot it. Today, I tried to run iPhoto again. This time I got the error message from Apple and the computer rebooted. This was the error message I received:
Interval Since Last Panic Report: 246719 sec
Panics Since Last Report:          1
Anonymous UUID:                    E36DFC39-BB71-0883-06EB-CFA1505350C9
Tue Sep 3 22:26:50 2013
Machine-check capabilities 0x0000000000000c09:
family: 6 model: 42 stepping: 7 microcode: 26
Intel(R) Core(TM) i7-2635QM CPU @ 2.00GHz
9 error-reporting banks
threshold-based error status present
extended corrected memory error handling present
Processor 0: machine-check status 0x0000000000000005:
restart IP valid
machine-check in progress
MCA error-reporting registers:
IA32_MC0_STATUS(0x401): 0x0000000000000000 invalid
IA32_MC1_STATUS(0x405): 0x0980000000000000 invalid
IA32_MC2_STATUS(0x409): 0x0000000000000000 invalid
IA32_MC3_STATUS(0x40d): 0xbe00000000800400 valid
MCA error code:            0x0400
Model specific error code: 0x0080
Other information:         0x00000000
Threshold-based status:    Undefined
Status bits:
   Processor context corrupt
   ADDR register valid
   MISC register valid
   Error enabled
   Uncorrected error
IA32_MC3_ADDR(0x40e): 0x00003f7f8fe3d958
IA32_MC3_MISC(0x40f): 0x000000000003ffff
IA32_MC4_STATUS(0x411): 0x0000000000000000 invalid
IA32_MC5_STATUS(0x415): 0x0020000000000000 invalid
IA32_MC6_STATUS(0x419): 0x0020000000000000 invalid
IA32_MC7_STATUS(0x41d): 0x0020000000000000 invalid
IA32_MC8_STATUS(0x421): 0x0020000000000000 invalid
Processor 1: machine-check status 0x0000000000000004:
machine-check in progress
MCA error-reporting registers:
IA32_MC0_STATUS(0x401): 0x0000000000000000 invalid
IA32_MC1_STATUS(0x405): 0x0980000000000000 invalid
IA32_MC2_STATUS(0x409): 0x0000000000000000 invalid
IA32_MC3_STATUS(0x40d): 0xbe00000000800400 valid
MCA error code:            0x0400
Model specific error code: 0x0080
Other information:         0x00000000
Threshold-based status:    Undefined
Status bits:
   Processor context corrupt
   ADDR register valid
   MISC register valid
   Error enabled
   Uncorrected error
IA32_MC3_ADDR(0x40e): 0x00003f7f8fe3d958
IA32_MC3_MISC(0x40f): 0x000000000003ffff
IA32_MC4_STATUS(0x411): 0x0000000000000000 invalid
IA32_MC5_STATUS(0x415): 0x0020000000000000 invalid
IA32_MC6_STATUS(0x419): 0x0020000000000000 invalid
IA32_MC7_STATUS(0x41d): 0x0020000000000000 invalid
IA32_MC8_STATUS(0x421): 0x0020000000000000 invalid
Processor 2: machine-check status 0x0000000000000004:
machine-check in progress
MCA error-reporting registers:
IA32_MC0_STATUS(0x401): 0x0000000000000000 invalid
IA32_MC1_STATUS(0x405): 0x0980000000000000 invalid
IA32_MC2_STATUS(0x409): 0x0000000000000000 invalid
IA32_MC3_STATUS(0x40d): 0xbe00000000800400 valid
MCA error code:            0x0400
Model specific error code: 0x0080
Other information:         0x00000000
Threshold-based status:    Undefined
Status bits:
   Processor context corrupt
   ADDR register valid
   MISC register valid
   Error enabled
   Uncorrected error
IA32_MC3_ADDR(0x40e): 0x00003f7f8e9feb37
IA32_MC3_MISC(0x40f): 0x000000000003ffff
IA32_MC4_STATUS(0x411): 0x0000000000000000 invalid
IA32_MC5_STATUS(0x415): 0x0020000000000000 invalid
IA32_MC6_STATUS(0x419): 0x0020000000000000 invalid
IA32_MC7_STATUS(0x41d): 0x0020000000000000 invalid
IA32_MC8_STATUS(0x421): 0x0020000000000000 invalid
Processor 3: machine-check status 0x0000000000000005:
restart IP valid
machine-check in progress
MCA error-reporting registers:
IA32_MC0_STATUS(0x401): 0x0000000000000000 invalid
IA32_MC1_STATUS(0x405): 0x0980000000000000 invalid
IA32_MC2_STATUS(0x409): 0x0000000000000000 invalid
IA32_MC3_STATUS(0x40d): 0xbe00000000800400 valid
MCA error code:            0x0400
Model specific error code: 0x0080
Other information:         0x00000000
Threshold-based status:    Undefined
Status bits:
   Processor context corrupt
   ADDR register valid
   MISC register valid
   Error enabled
   Uncorrected error
IA32_MC3_ADDR(0x40e): 0x00003f7f8e9feb37
IA32_MC3_MISC(0x40f): 0x000000000003ffff
IA32_MC4_STATUS(0x411): 0x0000000000000000 invalid
IA32_MC5_STATUS(0x415): 0x0020000000000000 invalid
IA32_MC6_STATUS(0x419): 0x0020000000000000 invalid
IA32_MC7_STATUS(0x41d): 0x0020000000000000 invalid
IA32_MC8_STATUS(0x421): 0x0020000000000000 invalid
Processor 4: machine-check status 0x0000000000000004:
machine-check in progress
MCA error-reporting registers:
IA32_MC0_STATUS(0x401): 0x0000000000000000 invalid
IA32_MC1_STATUS(0x405): 0x0980000000000000 invalid
IA32_MC2_STATUS(0x409): 0x0000000000000000 invalid
IA32_MC3_STATUS(0x40d): 0xbe00000000800400 valid
MCA error code:            0x0400
Model specific error code: 0x0080
Other information:         0x00000000
Threshold-based status:    Undefined
Status bits:
   Processor context corrupt
   ADDR register valid
   MISC register valid
   Error enabled
   Uncorrected error
IA32_MC3_ADDR(0x40e): 0x00003f7f8ef2e063
IA32_MC3_MISC(0x40f): 0x000000000003ffff
IA32_MC4_STATUS(0x411): 0x0000000000000000 invalid
IA32_MC5_STATUS(0x415): 0x0020000000000000 invalid
IA32_MC6_STATUS(0x419): 0x0020000000000000 invalid
IA32_MC7_STATUS(0x41d): 0x0020000000000000 invalid
IA32_MC8_STATUS(0x421): 0x0020000000000000 invalid
Processor 5: machine-check status 0x0000000000000005:
restart IP valid
machine-check in progress
MCA error-reporting registers:
IA32_MC0_STATUS(0x401): 0x0000000000000000 invalid
IA32_MC1_STATUS(0x405): 0x0980000000000000 invalid
IA32_MC2_STATUS(0x409): 0x0000000000000000 invalid
IA32_MC3_STATUS(0x40d): 0xbe00000000800400 valid
MCA error code:            0x0400
Model specific error code: 0x0080
Other information:         0x00000000
Threshold-based status:    Undefined
Status bits:
   Processor context corrupt
   ADDR register valid
   MISC register valid
   Error enabled
   Uncorrected error
IA32_MC3_ADDR(0x40e): 0x00003f7f8ef2e063
IA32_MC3_MISC(0x40f): 0x000000000003ffff
IA32_MC4_STATUS(0x411): 0x0000000000000000 invalid
IA32_MC5_STATUS(0x415): 0x0020000000000000 invalid
IA32_MC6_STATUS(0x419): 0x0020000000000000 invalid
IA32_MC7_STATUS(0x41d): 0x0020000000000000 invalid
IA32_MC8_STATUS(0x421): 0x0020000000000000 invalid
Processor 6: machine-check status 0x0000000000000004:
machine-check in progress
MCA error-reporting registers:
IA32_MC0_STATUS(0x401): 0x0000000000000000 invalid
IA32_MC1_STATUS(0x405): 0x0980000000000000 invalid
IA32_MC2_STATUS(0x409): 0x0000000000000000 invalid
IA32_MC3_STATUS(0x40d): 0xbe00000000800400 valid
MCA error code:            0x0400
Model specific error code: 0x0080
Other information:         0x00000000
Threshold-based status:    Undefined
Status bits:
   Processor context corrupt
   ADDR register valid
   MISC register valid
   Error enabled
   Uncorrected error
IA32_MC3_ADDR(0x40e): 0x00003f7f8ff81ab9
IA32_MC3_MISC(0x40f): 0x000000000003ffff
IA32_MC4_STATUS(0x411): 0x0000000000000000 invalid
IA32_MC5_STATUS(0x415): 0x0020000000000000 invalid
IA32_MC6_STATUS(0x419): 0x0020000000000000 invalid
IA32_MC7_STATUS(0x41d): 0x0020000000000000 invalid
Package 0 logged:
IA32_MC8_STATUS(0x421): 0x0020000000000000 invalid
Processor 7: machine-check status 0x0000000000000005:
restart IP valid
machine-check in progress
MCA error-reporting registers:
IA32_MC0_STATUS(0x401): 0x0000000000000000 invalid
IA32_MC1_STATUS(0x405): 0x0980000000000000 invalid
IA32_MC2_STATUS(0x409): 0x0000000000000000 invalid
IA32_MC3_STATUS(0x40d): 0xbe00000000800400 valid
MCA error code:            0x0400
Model specific error code: 0x0080
Other information:         0x00000000
Threshold-based status:    Undefined
Status bits:
   Processor context corrupt
   ADDR register valid
   MISC register valid
   Error enabled
   Uncorrected error
IA32_MC3_ADDR(0x40e): 0x00003f7f8ff81ab9
IA32_MC3_MISC(0x40f): 0x000000000003ffff
IA32_MC4_STATUS(0x411): 0x0000000000000000 invalid
IA32_MC5_STATUS(0x415): 0x0020000000000000 invalid
IA32_MC6_STATUS(0x419): 0x0020000000000000 invalid
IA32_MC7_STATUS(0x41d): 0x0020000000000000 invalid
IA32_MC8_STATUS(0x421): 0x0020000000000000 invalid
panic(cpu 0 caller 0xffffff800e0b8ec9): "Machine Check at 0xffffff800e0ce40f, registers:\n" "CR0: 0x000000008001003b, CR2: 0x000000007a232000, CR3: 0x0000000029615020, CR4: 0x00000000000606e0\n" "RAX: 0x000000008001003b, RBX: 0xffffff802f3d5490, RCX: 0xffffff800e6c1580, RDX: 0xffffff800e6bfc28\n" "RSP: 0xffffff81df713df0, RBP: 0xffffff81df713ef0, RSI: 0x000000316f7d995f, RDI: 0xffffff800e601f20\n" "R8: 0x0000000000000031, R9: 0x00000000075b8fe2, R10: 0xffffff81ce82ddc0, R11: 0xffffff800e6bac01\n" "R12: 0xffffff81ce82dfe8, R13: 0x0000000000000000, R14: 0xffffff802e3d5310, R15: 0xffffff800e3bacf0\n" "RFL: 0x0000000000000082, RIP: 0xffffff800e0ce40f, CS: 0x0000000000000008, SS: 0x0000000000000010\n" "Error code: 0x0000000000000000\n"@/SourceCache/xnu/xnu-2050.24.15/osfmk/i386/trap_native.c: 280
Backtrace (CPU 0), Frame : Return Address
0xffffff800df0bd20 : 0xffffff800e01d626
0xffffff800df0bd90
Model: MacBookPro8,2, BootROM MBP81.0047.B27, 4 processors, Intel Core i7, 2 GHz, 16 GB, SMC 1.69f4
Graphics: Intel HD Graphics 3000, Intel HD Graphics 3000, Built-In, 512 MB
Graphics: AMD Radeon HD 6490M, AMD Radeon HD 6490M, PCIe, 256 MB
Memory Module: BANK 0/DIMM0, 8 GB, DDR3, 1333 MHz, 0x859B, 0x435438473353313333394D2E4D3136464444
Memory Module: BANK 1/DIMM0, 8 GB, DDR3, 1333 MHz, 0x859B, 0x435438473353313333394D2E4D3136464444
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0xD6), Broadcom BCM43xx 1.0 (5.106.98.100.17)
Bluetooth: Version 4.1.4f2 12041, 2 service, 18 devices, 1 incoming serial ports
Network Service: AirPort, AirPort, en1
Serial ATA Device: ST1000LM024 HN-M101MBB, 1 TB
Serial ATA Device: MATSHITADVD-R   UJ-898
USB Device: FaceTime HD Camera (Built-in), apple_vendor_id, 0x8509, 0xfa200000 / 3
USB Device: hub_device, 0x0424 (SMSC), 0x2513, 0xfa100000 / 2
USB Device: Apple Internal Keyboard / Trackpad, apple_vendor_id, 0x0245, 0xfa120000 / 5
USB Device: BRCM2070 Hub, 0x0a5c (Broadcom Corp.), 0x4500, 0xfa110000 / 4
USB Device: Bluetooth USB Host Controller, apple_vendor_id, 0x821a, 0xfa113000 / 7
USB Device: hub_device, 0x0424 (SMSC), 0x2513, 0xfd100000 / 2
USB Device: iPhone, apple_vendor_id, 0x12a8, 0xfd120000 / 4
USB Device: IR Receiver, apple_vendor_id, 0x8242, 0xfd110000 / 3
Can anyone please help me. Thanks.

Reinstall the original memory and see whether there's any improvement. Be careful not to touch the gold contacts. Clean them with a mild solvent such as rubbing alcohol. Aftermarket memory must exactly match the technical specifications for your model. Memory that is either slower or faster than specified may be incompatible.
The Apple Hardware Test or Apple Diagnostics, though generally unreliable, will sometimes detect a fault. A negative test can't be depended on. Run the extended version of the test.

When I connect my MBP to another screen, all fonts turn dark and my VLC screen is really dark!

Hey.
Hope anybody can help me.
I have a Macbook Pro with Lion installed.
But... When I connect my MBP to my Samsung 32" screen.
* My fonts (Only on my Samsung, not on my MBP screen) turn dark, from a light greey to a really dark greey.
* When my VLC screen is on my MBP its normal, but when I put it on my other screen then it becomes really dark so its impossile to see whats on the screen.
Its the same on every screen i have tried (an LG aswell).
I have had this a couple of weeks now, ever since I borrowed a HDMI adapter from a friend and connected it with my MBP.
Its really becoming a problem. Since I can't watch anything on my screen anymore.
Does anybody have a solution?

Try:
- Going to NF support site/contacting them
- Try a different adopter
- Reset the iOS device. Nothing will be lost
Reset iOS device: Hold down the On/Off button and the Home button at the same time for at
least ten seconds, until the Apple logo appears.
- Reset all settings
Go to Settings > General > Reset and tap Reset All Settings.
All your preferences and settings are reset. Information (such as contacts and calendars) and media (such as songs and videos) aren’t affected.
- Restore from backup. See:
iOS: How to back up
- Restore to factory settings/new iOS device.

Is there any adapter vom macmini thunderbolt to LCD-Screen with VGA

I have just bought a macmini with thunderbolt and I have a LCD-Screen with VGA-connection. Is there any adapter to connect the screen with the mac??

The Thunderbolt connection is also a Mini-Display port connection, therefore you need a Mini-Display port to VGA adapter. Apple sells them on their on-line store.

T410 display replacable with T400 LCD screen?

My friend recently had a T400 that broke, and he took apart the computer for the sake of doing so.
He knew that I had a T410, and was wondering if I might want some of the parts. I knew that my screen was probably th biggest bottleneck I could upgrade for my computer, and immediately went for his screen. The screen was a LP141WP2. After some research, I've found that it is a LCD screen, just like my thinkpad t410. However, when I searched it up, I've found that it only put into T400. So, I was just wondering if anyone had any knowledge about this matter. I don't want to go tearing up my beloved T410 if it isn't going to be replaceable.
Thanks!
Thinkpad displays.
http://www.thinkwiki.org/wiki/TFT_display

This isn't a widespread defect AFAIK.
Do you have switchable graphics?
W520: i7-2720QM, Q2000M at 1080/688/1376, 21GB RAM, 500GB + 750GB HDD, FHD screen
X61T: L7500, 3GB RAM, 500GB HDD, XGA screen, Ultrabase
Y3P: 5Y70, 8GB RAM, 256GB SSD, QHD+ screen

T400 LCD Screen Replacement -

Hi gurus:
This concerns replacement of LCD Screen on my 14" T400 Laptop, which i'd purchased on Jan 14 2009.
>> This is a LED backlit WXGA+ Screen.
Usage:
** Very light usage; 2-3 hrs/week;
** Used this as a standby for my work laptop.
** Sparingly used for pretty much anything.
** I am very disappointed with this laptop and all through its performance and battery life has been very sluggish. (1 hr battery at the most).
>> Runs very slow even with Vista/XP downgrade
Problem:
>> 1.5 yrs later, the LCD screen on this laptop doesn't turn on.
>> I have tried the LCD Troubleshooting Guide @:
http://www-307.ibm.com/pc/support/site.wss/document.do?lndocid=MIGR-4YQHUC
** The screen is just plain dead. No startup blink. Nothing.
** Identified the following part details from my order:
From Order Confirmation:
44C1347
SBB 14.1"WXGA+LEDB/L BTCAMWWAN
FRU Part#
Mfg part# FRU part # Description Serviceable?
42T0503 42T0504 14.1 INCH LCD DISPLAY FRU YES
** What are my options in getting going with this laptop?
>> The LCD screen conking out in this manner with minimal use is unacceptable, according to me.
>> I had checked the price online for the Retail replacement part, and it brings it to a total of $400 approx.
Is there any extended warranty for the LCD screens? Any advise over where to buy from?
Regards,
Raghav

Hi Rich:
Thanks for your reply.
* I tried connecting the VGA cable to my LCD Monitor/TV, but i do not see any output after selecting the Secondary Display.
* When i boot up the Machine, the LCD does not blink/flicker e.t.c, but i can see that the regular bootup is happening as i look at the Hard Drive light and it keeps flickering.
* How do i check the LCD sub card? I am assuming its the panel because the LED Light on top of the Screen seems to turn on.
* Yes i have only the 1 year warranty.
>> My previous Dell Inspiron which had the same warranty term lasted about 4 years and only gave up because of the Motherboard.
I personally bought a Thinkpad thinking it was reliable, but this is quite bad, especially for a sparingly used laptop.
regards,
Raghav

Ios7 caused screen to become fuzzy or jumpy

I've had my iPhone 5 just over a year now taken good care of it and have never let it fall but since I updated to iOS 7, the bottom half of the screen has become fuzzy and jumpy as if it's double vision ?. I've reset the phone but that hasn't changed and I've updated to the latest iOS but it's still the same . My warranty is up but dye to work I couldn't send it off to be repaired as my carrier would not supply me with a replacement while my phone was away ! Any ideas ? Much appreciated

I saw your post, and had found it incredulous that you have a 1920x1080 display. A bit of research and I found I was wrong.
So, it appears you are driving the panel at its native resolution. Unfortunately, trying to determine what you mean by "Fuzzy" is probably going to be like trying to nail Jello to a tree. But, let's give it a shot. Is it fuzzy before you start X? Are lines and shapes fuzzy? Or is it just text that is fuzzy?
If it is just fonts, it could be a problem with hinting. Hinting is where the edges of fonts are deliberately fuzzed and feathered to get the kerning correct when the physical pixels of the display don't quite line up. This works well, unless the thing doing the hinting does not understand the geometry of the display. In a color LCD, each pixel is actually made up of smaller sub pixels, generally three -- A red, a green, and a blue. Green is usually in the middle. Some displays have Two greens per pixel, arranged RGBG. Some displays even have yellow subpixels. Sometimes the subpixels are arranged left to right, sometimes they are arranged top to bottom. Long story short, if you have hinting enabled, but the geometry is configured incorrectly, bad things happen. Take a look at this wiki article

T400 LCD screen black after replecement

History - T400 (2767-31U), Win 7.
LCD screen broken due to a drop. Laptop still worked with an external monitor via VGA slot and I ordered a replacement LCD.
The replacement finally (used-off ebay) arrived and I followed the HMM manual and replaced the LCD. But it still does not work. I can continue to use the ext monitor without any issues. The replacement LCD was the full assembly not just the LCD screen.
Here is what I noticed:
1. When booting up, I see the Thinkpad logo very very faintly before it goes fully black again.
2. All the LCD panel lights work fine - Wireless, BT, HDD, Battery, Power etc etc including the reading light.
3. The laptop recognizes when I open and close the lid and switches on the ext monitor accordingly.
Here is what I did (I followed the HMM to the detail):
4. When I replaced the LCD, I noticed that the original LCD had 2 black wires insulated at the ends originating from the bottom left area of the LCD that were not actually plugged into any area of the MB. I did the same on the replacement LCD and left them as it is. I don't even know what these are.
5. I connected the other 3 wires(white, grey and black) and the main connector as the original LCD/HMM.
6. I uninstalled the display drivers and restarted and Win 7 automatically installed the drivers again.
7. The Most important part - The original LCD when powered on, DID have backlight showing me the mangled area of the screen so I know it worked before replacement.
I have read quite a bit of posts regarding T400 black screen issues, pointing me towards a faulty MB, blown fuse or faulty inverter. I know the replacement is an exact replica of the original LCD.
Could it be that I didn't connect the wires correctly to their respective slots on the MB?
Any inputs would be highly appreciated.
Edit:
Solved!
Go to Solution.

Welcome to the forum!
Do I understand correctly that you bought a complete new LCD Assembly? Do you have proof from the seller that it was working properly before you bought it?
Can you see a picture if you use a torchlight over the panel?
A faint dark picture could be a defective LCD cable, inverter/LED card or a defective LCD backlight. Since you see a picture I would rule out a motherboard fuse problem.
Edit: Richk was faster!
/L40SX/240/240X/2*340CSE/360PE/365XD/380D/380E/380XD/380Z/390/560E/560X/2*570/2*600/600E/750Cs/755C/760CD/760EL/760XD/770E/A20p/A22p
A31/i1600/G40/R50p/R61i/S30/SL510/2*T22/4*T4x/11*T6x/6*T4x0x/6*T5x0/3*W5x0/W700/3*X2x/4*X3x/3*X4x/5*X6x/3*X6xT/10*X2xx/2*X200T/4*X30x/Z60m/3*Z61x
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T400 LCD Screen flickers or blinks every 5 seconds

T400 with Win XP Pro and Integrated Graphics, all the latest updates. Even did a Rescue to original factory.
I have read numerous issues with Thinkpad screen flickering, but have not found a solution for my laptop.
My T400 just started doing the following: Every 5 seconds, the screen will flicker one time looking like an old CRT screen rolling over once. Every 5 seconds. Oddly, this occurs only at the 60Hz rate. When I set the rate at 50Hz, the problem appears to get fixed. I have disable the Graphics Battery power option.
The flicker occurs during boot up even on the initial black / white screen, narrowing it down to hardware or bios.
Given the number of LCD issues I've read about on this era of machine (2009), I called Lenovo to see if there was a recall - they said no. I'm a Thinkpad fan, but I am beginning to wonder if Lenovo is not acknowledging a known defect.
I just want to know what to fix. Is this a defective LCD screen, or a motherboard chip issue?
Any thoughts out there??

This isn't a widespread defect AFAIK.
Do you have switchable graphics?
W520: i7-2720QM, Q2000M at 1080/688/1376, 21GB RAM, 500GB + 750GB HDD, FHD screen
X61T: L7500, 3GB RAM, 500GB HDD, XGA screen, Ultrabase
Y3P: 5Y70, 8GB RAM, 256GB SSD, QHD+ screen

T400 LCD screen is very dim, but icon lights for HDD, etc. are working

Hi - I'm wondering if anyone knows what the issue with my T-400 would be if the LCD screen is very dim. Details include:
- When I boot up, there's a faint outline of what is going on, but barely noticeable since the whole screen is very, very dim
- Video card is working okay, because I can operate the laptop when I plug in an external monitor
- The icon lights for HDD, power, battery, etc. are still working
Thanks so much for the help.

First a question: Is it a CCFL backlight or LED? If it is a CCFL, it could be just the inverter, which is a lot cheaper than the panel. If the CCFL bulb goes out, usually (but not always) there is a red tint to the screen for a while first. The LED backlights are less likely to blow and there is no inverter. (The LED backlight is DC and the inverter convers the DC to AC to drive the CCFL bulb) Do you know which kind of backlight you have? If you don't know, send me your full model and serial in a pm and I'll look it up. Don't post it in the open forum. Also, what were you doing when it went out? Were you doing anything except normal work, like taking something apart or hooking something up?

PS 7 and a new LCD Screen

Which one is causing the problem: PS 7 or my new 22" LCD Screen? No matter how many times I remove preferences, I get the same results.
Problem: All circles are printed as long ovals. What is designed looks fine on the screen, but when printed the shapes are elongated. To print them "correctly", I have to stretch out the circles horizontally until they print as circles. This is really dumb!
Please help. LCD screen is great, I love it, but I must be missing something here........appreciate some helpful ideas................mm

Well guys, this sure is the age of technology, but it's destructive when speed becomes the criteria of change instead of quality. I can think of lots of products that last 10 years or more, can't you? Oh, come on, software could be designed for better and longer use too. I can't help wonder if Adobe hasn't adopted the greed need for constant upgrades that don't work easily or well and require patch after patch for fixin'. Do we upgrade because it's really necessary, or to keep up with the Jones's, or just 'cause it's the latest thing to do? Please understand, I admire all who can keep up with the latest widgits and gidgits for whatever personal or professional reason, but let's not berate those who can't.
So, thanks Dave, I took your suggestion and checked out Amazon and CS4 is reasonable. If I do get it, it'll have to sit on a shelf until this 'puter dies, and by then you guys'll be in CS 9 or more. I noticed it stated a different screen (1,024x768 display (1,280x800 recommended), and I just changed mine to native resolution for this 22"LCD. Now what?
As always, many thanks......................mm

Yosemite causing slow screen refresh using TOS

Problem description:
I use my iMac for trading with a java script app called ‘ThinkOrSwim’. It was working fine with Mavericks then I upgraded to Yosemite. Problems continue even when upgrading my RAM from 4GB to 16GB. Overtime the Screen refreshes get really slow after using the ‘TOS’ Platform for 2-3 hours. Have to do a SMC Reset to be able to use the ‘TOS’ platform once it becomes too unbearable to work with it.
EtreCheck version: 2.1.6 (109)
Report generated January 22, 2015 at 3:05:42 PM CST
Download EtreCheck from http://etresoft.com/etrecheck
Click the [Support] links for help with non-Apple products.
Click the [Details] links for more information about that line.
Click the [Adware] links for help removing adware.
Hardware Information: ℹ️
iMac (27-inch, Mid 2010) (Technical Specifications)
iMac - model: iMac11,3
1 3.2 GHz Intel Core i3 CPU: 2-core
16 GB RAM Upgradeable
BANK 0/DIMM0
4 GB DDR3 1333 MHz ok
BANK 1/DIMM0
4 GB DDR3 1333 MHz ok
BANK 0/DIMM1
4 GB DDR3 1333 MHz ok
BANK 1/DIMM1
4 GB DDR3 1333 MHz ok
Bluetooth: Old - Handoff/Airdrop2 not supported
Wireless: en1: 802.11 a/b/g/n
Video Information: ℹ️
ATI Radeon HD 5670 - VRAM: 512 MB
iMac 2560 x 1440
System Software: ℹ️
OS X 10.10.1 (14B25) - Time since boot: 0:21:32
Disk Information: ℹ️
WDC WD1001FALS-40Y6A0 disk0 : (1 TB)
EFI (disk0s1) <not mounted> : 210 MB
Macintosh HD (disk0s2) / : 999.35 GB (888.30 GB free)
Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB
OPTIARC DVD RW AD-5680H
USB Information: ℹ️
Apple Internal Memory Card Reader
Apple Inc. BRCM2046 Hub
Apple Inc. Bluetooth USB Host Controller
Apple Computer, Inc. IR Receiver
Apple Inc. Built-in iSight
Gatekeeper: ℹ️
Mac App Store and identified developers
Launch Agents: ℹ️
[loaded] com.google.keystone.agent.plist [Support]
[failed] com.lexmark.bmspecificlaunchd.plist [Support] [Details]
[loaded] com.lexmark.lexprint.plist [Support]
[failed] com.lexmark.lxknetlaunchd.plist [Support] [Details]
[invalid?] com.oracle.java.Java-Updater.plist [Support]
Launch Daemons: ℹ️
[loaded] com.adobe.fpsaud.plist [Support]
[loaded] com.google.keystone.daemon.plist [Support]
[loaded] com.macpaw.CleanMyMac2.Agent.plist [Support]
[invalid?] com.oracle.java.Helper-Tool.plist [Support]
[loaded] com.oracle.java.JavaUpdateHelper.plist [Support]
User Launch Agents: ℹ️
[loaded] com.macpaw.CleanMyMac2Helper.diskSpaceWatcher.plist [Support]
[loaded] com.macpaw.CleanMyMac2Helper.scheduledScan.plist [Support]
[loaded] com.macpaw.CleanMyMac2Helper.trashWatcher.plist [Support]
User Login Items: ℹ️
Preview Application (/Applications/Preview.app)
Internet Plug-ins: ℹ️
FlashPlayer-10.6: Version: 16.0.0.235 - SDK 10.6 [Support]
Default Browser: Version: 600 - SDK 10.10
Flash Player: Version: 16.0.0.235 - SDK 10.6 Mismatch! Adobe recommends 16.0.0.287
QuickTime Plugin: Version: 7.7.3
o1dbrowserplugin: Version: 5.38.6.0 - SDK 10.8 [Support]
OfficeLiveBrowserPlugin: Version: 12.3.6 [Support]
Google Earth Web Plug-in: Version: 6.2 [Support]
googletalkbrowserplugin: Version: 5.38.6.0 - SDK 10.8 [Support]
DirectorShockwave: Version: 11.6.1r629 [Support]
iPhotoPhotocast: Version: 7.0
User internet Plug-ins: ℹ️
thinkorswim plugin_x86_64: Version: thinkorswim_x86_64 1.0.0.0 - SDK 10.7 [Support]
tossc plugin_x86_64: Version: TOS Sharing Center plugin_x86_64 1.0.0.0 - SDK 10.7 [Support]
WebEx64: Version: 1.0 - SDK 10.6 [Support]
3rd Party Preference Panes: ℹ️
Flash Player [Support]
Time Machine: ℹ️
Time Machine not configured!
Top Processes by CPU: ℹ️
      19% JavaApplicationStub
      6% WindowServer
      0% fontd
      0% launchd
      0% notifyd
Top Processes by Memory: ℹ️
1.05 GB JavaApplicationStub
103 MB mds_stores
86 MB Safari
69 MB Dock
52 MB spindump
Virtual Memory Information: ℹ️
13.27 GB Free RAM
2.43 GB Active RAM
532 MB Inactive RAM
945 MB Wired RAM
1.14 GB Page-ins
0 B Page-outs
Diagnostics Information: ℹ️
Jan 22, 2015, 02:44:42 PM Self test - passed

I just want to add that to further this improvement, I also disabled stat menus, and anything on the menu bar that caused the screen to refresh. I disabled transparency, the genie effect, and forced quit the window server on the activity monitor, and disabled the dashboard and the system preference "displays have separate spaces" - which required a re-login.
I also left the auto-switching on the nergey preferences to the GPU to always use the 330m, rather than the intel hd card.
Basically, I disabled anything that made any extra load on the GPU.

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.

T400 adapter causes lcd screen to become really dark

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