IBM Thinkpad t40 black screen (by 2 users)
posted by Ben813 on Mar 28, 2008
I have an IBM Thinkpad t40 that has a black screen if I push down on the key board the screen comes on sometimes and stays on sometimes. Someone told me it might be an issue with a loose chip under the keyboard, can anyone assist. Thanks in advance.
Comment by Ben813, posted on Apr 02, 2008
thanks for the info i was trying the first suggestion and everything seemed ok, I have looked at the second suggestion more in depth and that seems to be my issue, I will try to do that in the next couple of days. Thanks to all for the help it is greatly appreciated.
1 Other User Has The Same Problem
Comment by mkoelby, posted on Apr 13, 2008
I have almost the same problems. Sometimes the screen start to flicker and within seconds it goes black. But if I look carefully I can still see the desktop and all the windows, so its like the sceen is still on but only with 2 percent intensity. What will help in my situation? It is a loose cable?
Best Solution
posted on Jun 13, 2008
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Ginko, sorry but your wrong. it definitly the GPU which always needs to be reflowed. Look up reflowing t40-41 gpu's. Also Ibooks have the same GPU chip set and are now running into the same problems. I hae contracts with 5 colleges in the area Western MA, I see them every day, this is a common problem..
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Solution #2
posted on Apr 01, 2008
Chips DO get loose and what you're experiencing is a common problem with IBM T40's. The solder that holds the graphics processor to the motherboard is cracked and no longre consistantly makes a good connection. This problem can only permanently be resolved with a new motherboard, or reflowing the solder of the GPU chip on the old one with a heat gun. Do a search for "thinkpad solder reflow" in any search engine.
Good luck.
Good luck.
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Solution #3
posted on Mar 28, 2008
GuruChips dont get loose. what is out of place is your lcd ribbon cable. It is a flat cable connected on one side to lcd display, on the other to lcd display. If you keep pushing the keyboard to get screen on you can break more parts inside your laptop. open carefully the laptop and adjust lcd cable on connector. be careful not to break keyboard flat cable, speakers/pad ribbon cable etc. when lifting the keyboard. Servicing laptop requires attention and involves risk of damage if you do not have enough experience.
Regards
Regards
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