I've yet to see a board that was reliable under this situation
Originally posted by Shadow
Well, from my post that's been buried now, I'm building a pc. Messing around with my super old 486 trying to swap around ram sticks etc. I remembered that you don't _need_ ram.
This is usually not a good idea as you can fry good drives. I suggest that you test the board outside of the case with nothing more than your display adapter. It sucks to build a machine and find out that something is not working. Go in small steps. :)
Well, to get all the hard drives, floppy disk drive and cd roms along with the motherboard hooked up to test for power connections
If this isn't the memory, it is typical of a short between your power supply and one of your devices attached to it. It may be protecting itself from a low resistance.
I can't get anything at all. The cpu fan budges, one little bit, but that's probably from a residual power surge.
Do you have P8 and P9 inserted correctly? On AT class boards, all grounds are next to each other.... assuming this 486 is an AT class board.
I've even tried switching around all of the connections from the case to the motherboard which control the hard drive lights, power and reset switches etc. I've tried moving them around. I...just, I don't know.
You can also test the output voltage of power supply alone by attaching a bad drive (good spindle motor :P) or something not worth keeping in the event something is bad in the power supply, and then read the output voltage in each wire. You should have output reasonably close to the stated ratings of the supply. You can measure the current draw with an ammeter in series with the load; it too should be within a specified tolerance.