c64 component mod – troubleshooting

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  • November 18, 2021 at 12:32 PM #50254
    mwardy
    Participant

      I’ve received my c64 c0pperdragon component video mod and after a couple of months smooth sailing, I’m now having some trouble with it. It had been working GREAT, but turned the c64 on the other day and *nothing*. Using the composite video output, the c64 works fine, so the bypass side of the board is working. But nothing but a blank screen from the component output. Also, after a few moments the TV says ‘no signal’ when using the component output from the c64. Tried another tv in the house, same. Unplugged the vic adapter board and ribbon cable, re-seated to be sure, still no go. A quick check with the multimeter, the voltage regs are putting out spot on 3.3V. I’m at a bit of a loss now trying to trouble shoot. I don’t own a scope or anything. Any ideas ? Thankyou !

      November 28, 2021 at 5:37 PM #50399
      BuckoA51
      Keymaster

        can you try another TRRS breakout cable if you have access to one?

        November 29, 2021 at 7:55 AM #50410
        mwardy
        Participant

          Hi Matt,
          We’ve managed to track the problem down to a dead voltage regulator (u2) on the vic-ii adapter board.

          https://github.com/c0pperdragon/C64-Video-Enhancement/issues/75

          Thanks,
          Mark

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