Bit of a twist here Browsing eBay and I find exactly the same obscure motherboard as the broken one. It was far too much money. Offered £30 plus £5 postage and it's mine. So even if the repair doesn't go well, at least my project can be back on track

I aldo dont think this sounds like static damage failure but tbh I wouldnt try any harder to diagnose and fix a S370 board they are fairly common. I'm keen to fix it as I want a motherboard with AGP, PCI and ISA for a Windows 98 project machine and these boards currently seem to cost more than I'd …

That's true. It's a low cost part, so I may as well give that a go

Possible answer... Tried another PSU, powered on and we have the magic smoke and fire! This is now fully burned out, so I'm going to remove both and try to find replacements Filename IMG_20200208_184911_1.jpg File size 197.58 KiB Views 109 views Small consolation, I soldered the PS/2 ports back on. …

Good point and something to act on

I didn't see any magic smoke, but it smelled like it! Are the CET items in the photo attached the VRMs? IMG_20200206_192441.jpg I think these smelled a bit at the time, but don't appear to be burned out. Is this something that could be swapped for replacements? Are they very specific parts or are …

Oh dear, it's got worse..... I tried a new CPU and it did the same beeping Turned it off and on again, then there was some buzzing, then the "magic" smell (burning) and turned it off. Now it won't turn on at all, with either CPU and with 2 PSUs. Swapped the power cable, no effect. The PSU fan …

Some good advice on more items to check. Thank you for the help so far. There are 4 capacitors near the CPU socket, 1500uF ones. They look ok but the tops have some thing grey marks on them, compared to all the others. Not bulging, no leaks top or bottom (can see under). Is it worth changing these? …

In the System Monitor part of the BIOS it shows voltages for: VCCVID(CPU) VTT(+1.5V) +3.3V +5V +12V -12V VBAT 5VSB All values seem ok No mention of -5V The PSU is from 2005 and shows -5V , 0.8A on the label.

Thanks, I'll check the -5V out tonight. I'm fairly sure that the voltage all looked ok in the BIOS and there didn't seem to be options for disabling warnings. Its a fault that causing a slow down in the BIOS and also causing that rapid error clicking/beeping from the pc speaker, so turning off a …

I'm waiting on another CPU and stick of RAM to arrive to rule those out I will also try one of those cheap PCI diagnostic cards to see how that reacts. Maybe even try another monitor I'll try anything I can think of

I sometimes get a small static shock off the inside of the case when it's on. Not common, but it does happen. At first I tried to swap the PSU, isolated the bottom of the board from the case, swapped the power cable, it still happens rarely However, I'm usually sat on this shiny smooth plastic chair …

derSammler wrote on 2020-02-03, 10:57: Fan alarm maybe? I did think if it could be this The CPU fan is spinning ok, CPU temperature seems ok too. No other fans connected to the motherboard It's not overheating according to temperatures in BIOS and there's no top on the case during this testing

Did you try desoldering the speaker? :P Just unplugging the speaker is a perfect solution to that crazy noise, but the slow bios responsiveness will still be there and I think it's causing problems in Windows/DOS too relating to keyboard and crashes. Got to solder the PS/2 ports back on, but they …

A Socket 370 motherboard forms the base of my Windows 98 project PC, but its got a problem that I can't find an answer to and I've tried everything I can think of/ Motherboard is a QDI Advance 9 Motherboard (Award BIOS), with ISA/PCI/AGP slots and USB ports - so its a very useful board for this type …