Hi Emilio, I did already and only what I found was R103 written on the controller at the very bottom, nothing else is visible. I tried to find it by google but nothing :( Here is what is broken: Update (02/25/2022): Emilio, As I mentioned in a comment above your provided list of potentiometers is very similar to the needed one, just instead of 6 connectors on micro-pot and on marshall, it has 3.
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