Help after checking psu "no signal "

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  • seanc
    Badcaps Legend
    • Nov 2008
    • 1319
    #41
    Re: Help after checking psu "no signal "

    Bad hard drives will cause stalling, freezing, jerky mouse movement, audio stutter, all sorts really. It could be faulty, but I can't understand why it would stop the machine begging POST and bringing up a display.

    If it consistently worked with the HDD unplugged, then I might agree....

    Will your machine work long enough for you to check the SMART values of the hard drive? Either via Speedfan or smartctl.

      Comment

      • sam67
        Badcaps Veteran
        • Dec 2009
        • 256
        #42
        Re: Help after checking psu "no signal "

        Hi guys quick update case solved Swapped hdd still same so that ruled that out so seanc was right but i had to to make sure..

        got spare psu and put that in faulty pc and put hdd out of my new pc in the faulty pc as the connector on my old pc was different .. plugged her in started first time ,powered off started first time ..left her running for a while and then powered off again ,started first time so even though psu was giving correct voltage rails while connected to hdd ,dvd writer and mobo there was an intermittent fault stopping the pc from booting with my old psu..

        So problem was psu even though i recapped the psu apart from a 22uf and 10uf cap .

        Now there was some decaying glue in the psu i managed to get most off but some remained ,i reckon either this was the problem or even the main filter caps as i did not check these but on rare occasions do cause an issue..If only i had a spare psu at first then i would not have had to make as many posts on this thread The good thing that came out of this was a bought a spare pc off ebay that i got cheap which allowed me to swap parts around to find this fault ,just a shame i did not have this at my disposal at the start of this thread

        Funny thing the guy at pc world reckoned mobo was dead,how wrong was he lol.Even said power supply was fine. so getting correct voltage rails does not always mean the psu is fine ..I will now be taking the faulty psu to bits to try and find the issue when i have the time..I wouldn't mind i bought a load of pan FM and FC caps which will come in handy i suppose..Just shows you

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