First post, by Boohyaka
- Rank
- Oldbie
Quick foreword to say that it feels weird posting about retro machines during such a dramatic time for the world. All my sympathy to the Ukrainians, many of them I've met thanks to this very hobby. Stay safe.
My beloved P3B-F stopped working out of the blue last night...after I shut if off to remove the NEC 2.0 USB card that was giving me trouble, it never came back on 🙁
I really hope with the amazing knowledge and skills found around here we can diagnose the issue and hopefully fix it? I just love that mobo and build and was having so much fun with it lately, it sucks big time.
I have a multimeter, time and motivation. What I can tell:
- Mobo doesn't start at all when power on is pressed
- Onboard power LED in the middle of the mobo lights up when the power supply is on
- Cleared CMOS
- I have stripped it out completely and removed it from the case, only CPU and RAM still on
- I have switched around and tested all parts with spares (Another Slot1 motherboard, CPU, ram sticks, power supply)
- I am trying to power it up by shorting ATX PWR pin's directly
- Everything works with the other mobo (GA-6BXS), nothing works with the P3B-F
- Physical inspection of the P3B-F looks OK, I see nothing wrong, caps look OK...
The only weird thing (with my limited electronics knowledge at least) that I discovered by accident, is that as soon as power hits the board (=PSU switched on), the resistor on the top-left of the picture (highlighted in red) gets hot to the point of being too hot to touch in a few seconds. I doubt that it's normal? Could that be a hint about what's wrong?
Many thanks in advance for your help, and hope this doesn't mean RIP 🙁