SN45G Paperweight

[GoldenMouse]

What's happening is that my computer usually waited a few moments after I pressed the power button to turn on. As in, no fans or anything came on for a little while after I pressed the button. It was a rock until some random instant in which it decided to spring to life. However, just yesterday it stopped coming on at all. It sits as a rock indefinitely. I've taken the power supply out, and shorted the green lead (what the power supply uses to determine whether or not it should turn on) to a black lead (ground). The power supply comes on every time, operating at what sounds to be minimal fan speed. (It's tiered, based on what the BIOS tells it to run at.) Doing some basic continuity testing on the corresponding leads on the motherboard's power connector produced the result of a weak signal passing through that is unaffected by whether or not the power button is being pressed. I have also tested the button directly, which came through with flying colors. The suspect parts are all part of the Shuttle SN45G barebone.

[Splash]

I'll give you a fiver for it

You don't have a short somewhere do you? Try reseating all components and see what happens.


EDIT - just re-read your post. When you switch it on and the PSU fires up does the power LED come on? Failing that does it match any of the symptoms mentioned at http://www.silentpcreview.com/forums...003e81ec9837e8 ?

[GoldenMouse]

That's the thing. The PSU doesn't fire up. When I say that nothing happens, I mean absolutely nothing. Used to be that nothing would happen, then it would all kick on a minute or so later. I've tried reseating everything.

[Splash]

Ah sorry - the PSU only fires up out of the box?

In that case I would propose that either you cpu is fried or your board is fried, most likely the latter, though it may have taken the cpu too. Do you have another cpu you can test in it?

Another potentially really stupid thing to try is clearing your CMOS, but I get the feeling you've already done that. Can't harm to suggest though!

[GoldenMouse]

That it does. Unfortunately, I don't have a second cpu to test out in this. Although, I did have a habit of shutting this thing down nightly. I bet that could have contributed. I'll note that when it did boot up, it functioned just fine. The only issue has been to get it started in the first place.

[Splash]

Just been checking my spares box 'coz I thought I had a 1Ghz Duron I could have lent you to test it but that's in my firewall now I'm afraid!

[GoldenMouse]

Wow, that's far more generous than I had been expecting. I'll just see if anyone local has one that I could borrow, or if there's a cheap one that I could get online.

[Splash]

You should be able to pick a Duron up for cheap as chips off eBay - you don't even need it to be a fast one!

[GoldenMouse]

"cheap as chips" ...

[GoldenMouse]

Ok, I just got the new processor in and tried it out. No go.

However, on a lark, I decided to attach an old power supply, even though it doesn't have the 12 volt connector. That...did it. It was the power supply all along. So, more expense and more waiting, but no horrible downgrade. More posting when there's something new.

[javalord]

Plenty of shuttle PSUs on ebay, had to buy a replacement last summer for girlfriend's pc too.