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Sound problem and a few other problems. #2

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HtmlBosss opened this issue Jul 31, 2024 · 0 comments
Open

Sound problem and a few other problems. #2

HtmlBosss opened this issue Jul 31, 2024 · 0 comments

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@HtmlBosss
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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?
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@HtmlBosss