Lenovo T400 dropped - LCD is sick :(

My T400 dropped off a table. It now has very random thin vertical columns of pixels that are white.

What was weird was that initially I changed the refresh rate (in windows 7 display options) to 60 Hz (from 50) and it fixed it, making me think that the video card was maybe screwed up. Unfortunately the problem began showing up in the 60Hz mode as well. The 60Hz still looks better that the 50Hz in which the screen is two-thirds white noise!!!

I cracked her open and did the usual press and jiggle of connections. It didn't affect the screen at all.

I'm willing to buy a new LCD but I'd like to be semi-confident it's the right fix.

Thanks in advance!!

Sorry. Maybe I posted in wrong thread.

I was just hoping to get y'alls opinion on this.

When hooked up to an external monitor it works fine.....

 

Yeah, could have very well cracked some of the solder that attaches the GPU to the motherboard, are you using a Dedicated, Integrated or, Hybrid graphics solution? You said you tightened all LCD connection cables? Could be the inverter, unlikely but it might fix it, does it have any warranty left on it? Yeah you may think GPU failure is mostly heat related but if the solder is cracked in any way it can cause things like you describe.

 

try resetting the display cable at both ends (mother board and back of the screen). If no improvement then buy a replacement screen

 

thanks guys. Sorry I tapped out last night and just logged on again now. Gonna try and reseat all of the connections. Then buy new lcd if that doesn't help.........I hope it's not a cracked solder joint.