First post, by RetroCat
Hi all,
I have a tightly integrated XT clone motherboard based around the Faraday FE2010A chipset. I can't recall if the original PSU that came with this computer always had the -12V pin disconnected in the P8 connector to the motherboard, but I dug this mobo out recently and it's shorting the power supply whenever this -12V pin is connected (constant clicking from the PSU and no POST on the motherboard). As soon as I disconnect the blue wire (-12V) from P8 the machine POSTs just fine.
Ordinarily this wouldn't bother me, but I believe I'm seeing some expansion cards not working quite right, especially sound cards - my thinking here is that these cards (that work fine in a different retro PC by the way) need this -12V from the ISA bus.
Thoughts? Anyone seen the same PSU shorting/clicking due to -12V problem ?