- Oct 16, 1999
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I have an Ultra 500w ATX power supply that I've got connected to a Chaintech ATX motherboard.
The power supply has 20-pin and 4-pin power connectors. When the 20-pin connector is plugged in only, I get power to the fans (CPU, Case and PSU), hard drive and DVD. When I also plug in the 4-pin connector, the CPU fan turns (sometimes) for a fraction of a second and then the system gets no power whatsoever, not even the PSU fans turn.
I've replaced the power supply so far and the results were identical.
I've also detached all power supply cables from the system devices and removed all add-in cards. I've also cleared the CMOS.
There are no obvious capacitor problems on the motherboard.
Is it most likely just a bad motherboard at this point? With such old system components, I don't think I'd bother replacing the motherboard only. I'd probably just scrap the whole thing (other than the hard drive), so if anyone has any suggestions at all, I'm game.
Any other ideas or other things I can test?
The power supply has 20-pin and 4-pin power connectors. When the 20-pin connector is plugged in only, I get power to the fans (CPU, Case and PSU), hard drive and DVD. When I also plug in the 4-pin connector, the CPU fan turns (sometimes) for a fraction of a second and then the system gets no power whatsoever, not even the PSU fans turn.
I've replaced the power supply so far and the results were identical.
I've also detached all power supply cables from the system devices and removed all add-in cards. I've also cleared the CMOS.
There are no obvious capacitor problems on the motherboard.
Is it most likely just a bad motherboard at this point? With such old system components, I don't think I'd bother replacing the motherboard only. I'd probably just scrap the whole thing (other than the hard drive), so if anyone has any suggestions at all, I'm game.
Any other ideas or other things I can test?