Hi All

I've just got hold of a Toshiba 480CDT Satellite Pro,

I had it working with the original power supply (on a power inverter plugged into my cars 12v as I wasn't near 240v power socket)

It was working fine, it booted into Windows 98 and I was playing with a few programs (media player and defrag)

I had it defragging for about 5 mins while charging via the car inverter, however it froze up and I had to hold the power button to reboot it.

When I tried to switch it back on the screen stays blank, the hard drive doesn't spin and there is only the power LED's and battery charging LED that comes on.

It will let me press the function key that lights up the fn LED on the top of the keyboard but then after a few presses stops lighting.

I've opened the case and found that there is two bios batteries, on a closer look at where they are plugged into the main board there is green type of corosion on pins, I removed the plugs (which might I add where very hard to remove due to the corosion), I've cleaned the plugs (male & female) with a WD40 pen and plugged them back in, I've had a voltage meter on them and they are showing voltage and also show a higher voltage when the laptop power supply is plugged into it, so this indicates that they are charging or at least getting voltage.

After doing this I put the laptop back together, but it's still suffering from the same problem???

Please could anyone help or give me a little advice? my next inspection is the power supply board but wanted to get some ideals before hand.

Thanks in advance.

Pete