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My GA 8SIMLNF motherboard keeps shutting down the PS. I'm convinced heat is NOT the issue. I tried a new good PS from my other PC and exactly the same problem, so it's not voltages either. I'm convinced it is a faulty sensing circuit on the GA 8SIMLNF motherboard. I could try shorting the PS_ON pin to ground, to force a permanent ON state, but want your thoughts on this first. I think though, that there is a failing transistor somewhere. Additional info . . I even reinstalled to factory, AND then a clean XP install, which never completed (on 3 attempts) due to exactly the same problem. What do you reckon? Thanks

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  • tshanasy Mar 17, 2011

    I've tried tying PS_ON to ground, and the PS stays ON, but software crashes still, so no advantage here. Looks like sensing circuit is doing its job, so a deeper cause, no doubt.
    Curtains to this motherboard.

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This definately sounds like a bad motherboard. I had a bad psu that was shutting down my system one time. I took it back and got a refund and got another one. Installed and never had the problem again. you said you already checked the psu so yeah thats what it sounds like.

Posted on Mar 15, 2011

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