T43p Loose Graphic Card/Cable?

[urschrei]

I have T43p 2668 H8G and my display is showing interference in the form of vertical and horizontal, usually magenta lines, especially noticeable during video playback, though visible in some way in all apps. Light pressure on the scroll key, space bar and/or surrounding area will make the interference vanish, and sometimes it isn't present at all, leading me to conclude that it's definitely not a software issue (I've rolled back the display driver, and updated twice now etc) The laptop itself is only 4 months old, and has had a gentle life thus far, and there's no external evidence of a serious knock that I didn't notice (and I have it with me almost every waking minute)
What I'm asking is: Can I reseat the graphics card/lcd connector myself, or does it have to go in for service? I'm used to servicing desktop hardware etc, and am fairly confident, but I assume I'll need a field service manual of some sort.

[Conmee]

There's nothing to reseat. The GPU is soldered onto the motherboard. No moving parts.

However, if the GPU itself passes all diagnostics (run PC Doctor as a first step, also run it from DOS environment--boot to service partition and run diags from there), it could be a cable or inverter issue. Unlikely it's the cabling. If it is, it would most likely be a) loose--the cable plugs into the motherboard just above the Access IBM key, so to check the cable connection (which is secured with a screw) you have to remove the keyboard, palmrest, and keyboard bezel; or 2) you could have a problem with the inverter card, which sits underneath the bottom of the LCD bezel, adjacent to the power/drive/battery/etc lights.

The only thing you can replace really, is the inverter, or the whole LCD itself. But it is difficult to know what is broken, assuming that your machine passes the PC Doctor tests. So you'll probably have to send it in for repair.

I've replaced the inverter card and entire LCD/backlight assembly. Not overly difficult, but a number of screws and wires (for wireless and bluetooth) that must be routed around the edges, so it's a bit of a balancing act. But can be done, if you're a do-it-yourself type and you know what needs replacing.

Daniel.

[urschrei]

It fails the DOS PC Doctor Diagnostics (Video Memory, and the Radeon Tests)

So, faulty GPU, and thus service, it seems.

[kyrotech]

It fails the DOS PC Doctor Diagnostics (Video Memory, and the Radeon Tests)

So, faulty GPU, and thus service, it seems.

pitty, say hello to the replacement serviceable used system board