TheZock

Hi.

I just got one old A500 from the bay. On power up one capacitor of the internal drive popped. At first i thought the old capacitor was broken anyway and replaced it. Powered it up again another capacitor on the drive popped. After that a bit of the driver-ic popped away together with a bit of die.

Now i measured the voltages of the power supply. Normaly it should be +5V, +12V and -12V. But my supply delivers +5, -12 and +38V! ... I guess +38V is the reason why the capacitors popped.

Can somebody imagine why the power supply delivers +38V and not +12V? I opened the supply and everything looks good. It's the old heavy version. There seems to be some resistor to make a adjustment. Could it be that this resistor is misadjusted?

Damn, i hope the supply did not damage more than the drive :-P

Best Regards

<TheZock>