10-17-2008 05:13 PM
Now I'm quite puzzled with the fact that it worked for an hour and then started misbehaving again...
And the other (known working?) LCD doesn't work at all?
10-17-2008 10:51 PM
10-18-2008 05:05 AM
10-18-2008 07:41 AM
10-18-2008 01:37 PM
Tech was right, and the LCD is compatible...and inverter doesn't need a driver per se...
Where've you gotten the previous inverter?
10-18-2008 09:22 PM
I now have four LCD inverters available. The assumed broken one, the one off my old R51, the assumed working one I got from Ebay, and my sisters working T42's all work in my r51 just fine, none work in the T42. Could it be a motherboard issue? Thanks
10-19-2008 02:15 AM
yes it seems to be a motherboard problem. T4* are suffering from the so called
"flexing" phenomenon.Google for it.
The gfx chip and it´s solder breaks apart from the board.
The problem is rather frequent and happend when taking your TP with just one hand at the corner.
Sadly you´ll need a new mobo.
Follow @LenovoForums on Twitter! Try the forum search, before first posting: Forum Search Option
Please insert your type, model (not S/N) number and used OS in your posts.
I´m a volunteer here using ThinkPad 13, X1 Carbon 2nd Gen., Yoga 900, ThinkPad Yoga, T430s, IdeaCentre B540.
TIP: If your computer runs satisfactorily now, it may not be necessary to update the system.
10-19-2008 10:32 AM - edited 10-19-2008 10:32 AM
This has just happened to my T42. I didn't notice any discoloration (reddishness) before this happened. I can still use my laptop with an external monitor and the screen on the laptop works for a few minutes after I power it on but then it blacks out every time.
From what I can tell, and after reading some forums, the problem is probably a bad inverter, a burned out backlight, or this "flexing" problem. Is there any way I can find out which is my actual problem? I ask this because my warranty expired a month ago and fixing this will have to come out of pocket.
Thanks for your help.
10-19-2008 07:39 PM
There are two things here that I find out of the ordinary for a GPU failure:
a) The machine worked for an hour before dying and never came back afterwards, with a proper picture on LCD.
b) The buzzing sound that OP described.
I'm not ruling out a motherboard problem, having owned a X31 that behaved in a similar manner, but the big difference here is that I never got anything more than a faint image on the LCD...
Puzzled I am, that much I'll admit...
11-25-2008 06:28 AM
Did you ever get it fixed? I just came down with the same problem and followed your post. I have ordered an inverter and will try that first. Let us know what you found out.