t42 fall off the lap

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ASIS975 · #1 Post by **ASIS975** » Mon Dec 05, 2011 3:50 pm

my t42 fall off of the lap and screen goes blank hdd is still spinning. so i pressed the power button to shut off the laptop. and then i restart it after 2 min it did turn onn but after it boot up screen turn off again .... its been keep doing this every time i restart the laptop it turn onn the screen but it turn off everytime ...... help me pleaseeeeeee

#2 Post by **RealBlackStuff** » Mon Dec 05, 2011 4:17 pm

Remove keyboard, KB bezel and palmrest.
Remove and reconnect the LCD cable from/to the motherboard.
Reconnect the keyboard to try it.
If not, probably the CCFL is broken (small light tube in bottom of LCD.
Does the laptop work with an external monitor?

ASIS975 · #3 Post by **ASIS975** » Mon Dec 05, 2011 5:43 pm

if CCFL is broken (small light tube in bottom of LCD) upon restart i should got a blank screen but i don't get a blank screen, screen stays onn untill it boot up and then screen goes offf....if the laptop moves just a little bit.

Orclas · #4 Post by **Orclas** » Wed Dec 07, 2011 12:24 pm

It could be that the fall and impact has made your TP suffer from the GPU/Southbridge solder issue, described here: http://forum.thinkpads.com/viewtopic.php?f=2&t=73945

It's just a theory, but worth looking into, particularly since you say it happens when you move it.

ASIS975 · #5 Post by **ASIS975** » Wed Dec 07, 2011 12:43 pm

it could be the inverter too ? i ve took out the inverter and its looks good to me. is there a way to chek the inverter ?

Orclas · #6 Post by **Orclas** » Wed Dec 07, 2011 3:19 pm

ASIS975 wrote:it could be the inverter too ? i ve took out the inverter and its looks good to me. is there a way to chek the inverter ?

Lick on the contacts?

Edit: Hmm, seriously. Do you have an external monitor to hook it up to. If you do and it passes the move-the-laptop-around-a-bit test, then you can at least rule out GPU etc and focus on built in monitor problems.

ASIS975 · #7 Post by **ASIS975** » Thu Dec 15, 2011 2:01 pm

i ve just install the brand new inverter and the problem is still there. should i replace the lcd cable ? or do i need a new systemboard ?

#8 Post by **RealBlackStuff** » Thu Dec 15, 2011 2:58 pm

You still haven't told us if an external monitor works

ASIS975 · #9 Post by **ASIS975** » Thu Dec 15, 2011 4:39 pm

i did not check yet with extrnal moniter ... but i will check it later today or tomorrow. and i will post the result.

ASIS975 · #10 Post by **ASIS975** » Thu Dec 15, 2011 5:24 pm

ok it did not work with external moniter hooked up.external moniter goes black screen after computer moved a little bit.... so what could be it ??

Orclas · #11 Post by **Orclas** » Thu Dec 15, 2011 6:11 pm

That definitely sounds like motherboard/gpu/southbridge etc problem, but I'm not knowledgeable enough to say how to narrow it down further. Beyond the fact that GPU is the standard-no 1-suspect when a display starts fuzzing, the only thing I can contribute is that display problems is not one of the common SB problems (and perhaps not one at all).

#12 Post by **RealBlackStuff** » Thu Dec 15, 2011 7:22 pm

@ASIS975:
check your email account

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