TheAbandonwareGuy wrote on 2022-12-28, 19:20:
Pulled out the Optiplex GX260, plugged it in, heard a pop, PSU blew out smoke, now the room smells like Caramel (oddly pleasant […]
Pulled out the Optiplex GX260, plugged it in, heard a pop, PSU blew out smoke, now the room smells like Caramel (oddly pleasant smell, makes me wonder what chemicals I'm inhaling currently).
Now the new low profile GeForce 6200 AGP has no home 😒
Not sure if this is just my collection aging (it didn't explode the last time I had it powered on, 3 years ago) or if the unclimate controlled shed I store my stuff in is actually becoming a major problem.
EDIT: Motherboard survived after testing with another PSU. Will probably tear open the dell PSU and see if the failure is easily fixed. If not, I guess I'll have to spend $20 on a new PSU from eBay since I don't have any Dell SFF PSUs of this type lying around or in any other system.
This is why I visually inspect power supplies internally before plugging them in nowadays. Although it's not foolproof as capacitors can be bad without looking the part, it reduces the chances of me using something with bulged/leaked capacitors or low-quality capacitors that were a miracle that they survived for so long. It also helps identify how well-constructed the power supply is, especially when I'm cross-referencing it with the old PSU thread from several years back.
Considering it's a Dell from the capacitor plague era, I'm willing to bet capacitors inside the power supply were to blame. I once had an Optiplex GX520 with bulged capacitors both on the motherboard and inside the power supply. Although it still worked in this state, I ended up replacing both components for good measure.
I should get a PSU tester and test all of my spare power supplies (as well as the ones I'm currently using in my old computers) to ensure they're within spec. I'll be sure to make it (along with visual inspections) an annual ritual once I come across a good tester.
Most of the time, it's tough to find good modern replacement power supplies for older computers because modern power supplies have their own sets of problems (e.g. not enough Molex connectors, not enough current available on the 5V rail (important for K7 Athlons), the lack of a floppy drive connector, and the lack of a -5V rail (for certain ISA cards)) that make finding the ideal replacement difficult sometimes. Not to mention the proprietary form factor power supplies that smaller computers used.