Super Famicom – white diaganal lines coming and going

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  • #40690
    indae
    Participant

    Hi, I recently bought up a Super Famicom and have been playing it using the OSSC. It feels like the image quality degrades over time and becomes slightly darker and white diagonal bars appear across the screen the longer it’s on. I’ve got a side by side of it when the bars are there (left) and when they’re not (right) here (please ignore the characters in the bottom left and top right corners). I don’t have any other images but the bars are very bad on brighter colours

    I googled the issue and noticed a few people complaining about similar lines on their screen and a fix that was suggested it was an issue with the consoles with the APU-01 board revision and lifting pin 3 on PPU2 would fix it but given the problem is intermittent for me I’m not sure if this is the issue I’m having.

    I thought it could be an issue with the cable I’m using which isthis RGB cable.

    If anyone has any suggestions on what I could do to fix this it would be awesome.

    #40724
    Harrumph
    Participant

    Considering it builds up over time, I suspect it could be a power supply issue. Failing caps or something.
    Try a different power supply first.
    Or it’s failing caps in the console itself, in which case you should get it recapped.

    I doubt it’s the cable given the general quality of retrogamingcables.

    #40732
    indae
    Participant

    Thank you for your reply, this really helps! I’d asked around and someone else said the same thing which is a shame because I bought it from somewhere that says they specialise in retro power supplies. Do you have any idea if this power supply will work with the Super Famicom? I’m just worried about bricking it.

    #40751
    Harrumph
    Participant

    Anything that outputs DC9-10V, at least 1A and has center negative pin will work. As for the quality/price of that particular one, I don’t know.

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