Thinkpad 560E hardware problem

[ingozi]

Hi

My 560E restarts (cold start) every time I adjust the screen angle, that is move the screen in the hinges, or when press on certain spots on the top cover. I opened up the laptop (have done this before) but could not solve the problem. Incidently, when I press slightly with a screwdriver on the metallic sheet below the mainboard, the computer reboots.

Does anyone know what this could be?

Cheers

[ingozi]

I investigated my problem a little more yesterday with a multimeter. When the cold start occurs, I measure a DC voltage peak across the metal plate below the main board and the rightmost battery connector pin. If found this in the 560E technical referenace manual:

"A short circuit placed on any dc output (between outputs or between an out and a dc return) latches all dc outputs into a shutdown state, with no hazardous condition to the power supply.

If an overvoltage fault occurs in the power supply, the power supply latches all dc outputs into a shutdown state before anu output exceeds 135% of the nominal value of the power supply."

After reading this I tried to find a short circuit anywhere but could not. I should probably mention that the battery does not charge anymore and I left it out of its socket. The problem occurs, however, both with an attached and without attached battery pack.

Any comments? I would be most grateful.

Cheers