Board-Folk/CPC464-2MINI

Sound problem and a few other problems.

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HtmlBosss commented

Hello, I assembled a few PCBs in version 5.3.

  1. I have a problem with AY sound.

I use AY-3-8910A or YM2149F but I can't get any sound. I always hear noise (literally noise) on the J103 stereo output after starting any game or software. Do you have the same?
Problem with sound and a few other problems.

  1. How do you have the jumpers set on resistors R185-R188?

  2. Can I replace transistor Q102 (C1815) with another transistor that has similar pinouts and parameters?