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  1. I just picked up a non-working 128k as a project. When I turn it on there is no chime or video, but there is a repeating clicking sound coming from the speaker. I'd say about 2 clicks per second. I'm assuming it's an analog board issue, but I don't know where to start looking. None of the capacitors are swollen that I can see with a quick look from above, I haven't pulled the analog board out yet to take a closer look. A reddit user said it could be a HV diode, I haven't taken a look at that yet to see if it is visibly damaged, I'll be doing that tomorrow. If anyone has ideas for trouble
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