OSSC Stopped working

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  • #26705
    jordi
    Participant

    So, I’ve been using my 1.5 DIY kit for quite a long time, but it recently stopped working suddenly.
    First display wouldn’t turn on but it was due to a loose weld in display (near Q2) probably moved during a trip. Fixed it, it worked for a few days, then something happened and ossc won’t turn on at all.
    Now when I turn it on, there’s like a real small flickering in the display, but nothing else happens.
    Any idea on what to check?
    Thanks!

    #26805
    marqs
    Participant

    You should measure all regulator voltages and ensure they’re within spec. One possible cause is a cold joint on FPGA bottom ground pad. If you see VCCINT voltage deviating from 1.2V, try reflowing the bottom pad.

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