Toshiba Satellite A100 laptop shuts down after 30 seconds

[samltd]

Hello everyone,
I have a Toshiba Satellite A100 laptop and it shuts down after 30-40 sec after turning on.
The fan spins OK.

Here's the specs:
Intel Core Duo T2250 (1.73GHz, 533MHz FSB, L1 Cache 32KB/32KB, L2 Cache 2MB)
RAM 2x512 MB DDR2 (533MHz)
HDD 80GB, 9.5mm height, S-ATA, 5400rpm.
Intel Graphics Media Accelerator 950
Intel Wireless LAN (802.11a/b/g) 3945ABG
10/100 integrated Ethernet LAN
V.92 56K Data/Fax Modem Toshiba software modem
DVD Super-Multi Double Layer Drive

It shuts down:
with or without the VGA cable connected;
loading windows, if only enter the BIOS screen or a live CD linux/windows;
with all components removed or connected (all or combined)

Tried the following:
removed memory, HDD, WiFi card, modem, DVD, keyboard, touchpad
resoldering the CPU and GPU using hot air
cleaned the heatsink and applied new thermal paste
tried different power supply and battery
checked the motherboard for blown/burnt components, especially capacitors - nothing appears to be blown/burnt.

I'm out of ideas.
Any help is greatly appreciated

[Gabriel Torres]

http://forums.hardwaresecrets.com/co...t-turning/4010