Recent content by jkarma

  1. J

    Schematic for PAL SNES

    Let me tell you. I have measured all three source voltages and they correctly measure 4.96V, 12V, and about 10V (instead of 9V) for the audio amplifier. This console worked fine but had noise, like hum, in the sound, I changed 4 capacitors from the power supply which gave wrong measurement with...
  2. J

    Hello everyone

    Sorry. It has been an oversight on my part.
  3. J

    Hello everyone

    Let me tell you. This console worked fine but had noise, like hum, in the sound, I changed 4 capacitors from the power supply which gave wrong measurement with capacitance meter, then the hum or noise disappeared. But when assembling the console, nothing appeared, just snow on the TV. I...
  4. J

    Schematic for PAL SNES

    I have problems with the S-CLK chip, on pin 4 (XOUT) it generates an incorrect signal that you can see in the link below. I think the correct signal would be a square wave between 0 and 5V of about 21 Mhz auto
  5. J

    Hello everyone

    Good. I am an electronics technician and I try to repair old consoles like NES, SNES, PS1 etc. for me and my family. I don't do it as a profession, just as a hobby. Now I am repairing an old Super Nintendo and I have some doubts that I try to clarify on this site. Thanks and best regards.
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