Reply 20 of 21, by Miphee
- Rank
- Oldbie
I tried a bunch of ODD/EVEN ROM pairs (even the original BIOS on a new pair of chips) but none worked. I checked the voltages of the ROM pins and they seem fine so the ROMs are probably OK. System chips get slightly warm so power seems ok, +5V is present on the correct input pins.
I noticed one strange thing: the power LED on the PSU only works when the mainboard is disconnected. When I connect the mainboard the LED won't work.
Maybe there is a short I didn't notice but why would it affect the LED and not the rest of the circuits?