Dead motherboard?

December 5, 2005 at 12:07:39
Specs: n/a, n/a

I have an older system that has sat for a few months. Its a Chaintech 7aja2 with an athlon xp 1600+ cpu. I had to replace the power supply since it was going. I was getting spontaneous reboots and I heard a grinding sound from the power supply. Well it finally died. I took the PSU out and sure enough it was dead.

I haven't bothered replacing it but I recently did. So I put the new PSU in the machine and I get nothing. the PSU is fine, its brand new it powers the drives and I get a little red LED on the motherboard so there is power but I get nothing on my monitor.

I tried reseating everything, unplugging everything, checking jumpers, everything a person does to test a motherboard. Lastly, I pulled the board out of the case and just attached the video card. The card is good, it works in my other machine. I got nothing. Just the power supply fan and the red LED on the motherboard. I see no signs of corrosion on the board or any physical signs of damage. No bent pins. Everything is seated properly. I don't even hear any beeps with an attached speaker.

Could the board be dead? Could the old PSU have fried the board? Or is there something else I can try?


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#1
December 5, 2005 at 12:33:51

Since you have verified good powersupply and graphics that leaves only motherboard, CPU or RAM (or a combination) Only way to test CPU is in a known good board.

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#2
December 5, 2005 at 12:38:06

"Well it finally died. I took the PSU out and sure enough it was dead."

If by that it means you tried to test it, do you realize that an ATX PSU won't fire up outside the case unless a jumper wire is connected between the green wire & any black wire?

If the PSU did burnout, it's very possible that it took the board or CPU with it.

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#3
December 5, 2005 at 12:42:37

"If the PSU did burnout, it's very possible that it took the board or CPU with it."

Thats my thinking as well. I don't know about the CPU but at least the board is dead I think. I only had the MB with a video card attached. No CPU or ram installed and still nothing. I even took out the video card to be sure but as I mentioned, with the speaker attached, I get no beeps at all.



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#4
December 5, 2005 at 12:48:49

With no CPU you won't get any response in a benchtest. You cannot presume a dead motherboard based on what you've done so far.
Without ram or graphics you should get beep errors but without a CPU you get nothing.
The only way to test the motherboard is with a known good CPU. The only way to test the CPU is with a known good motherboard. You're in Catch22. Take it to a tech to have it tested before you buy any more components.

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#5
December 5, 2005 at 13:21:30

I'm taking it to the fellow who sold me the parts tomorrow.
Hopefully he'll be able to tell for sure if or what's the problem and what needs replacing.


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#6
December 5, 2005 at 20:02:59


I had power supply go bad on my older desk top and when it went it took out the motherboard, the floppy drive and the hard drive. What I did was look around on the internet and found a similar motherboard and bought it for 25.00 and took a chanse that the CPU and memory would be OK. As it turned out they were and it worked, but there was no way to test it except to replace and try.
Retired
5Dec05


Retiredeverett


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#7
December 6, 2005 at 04:55:18

Thanks Retired. I was thinking of doing the same thing. Currently, a similar board, ram, CPU combo can be had for $45 on ebay.


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