Re: GRUNDIG C8200 CUC60 sparkgap noise
Hi
I think this uses a CRT base with integral focus spark gap. If that's the case then it's probably got green corrosion inside. You can try cleaning, but a look in your spares box would be a better bet. I'd not be inclined to suspect the tripler, but check if there's a high value resistor south of the focus pot.
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