MEF members....
I have a Marshall 5275 Combo Amp (AKA Marshall 75 Reverb) that has a bad pot, VR1 - the boost gain 1M pot with pull switch. The shaft has lots of play and when you touch it, you can hear an electric connection issue. I don't how to describe that. Unlike other pots, this one has the pull switch attached to the back. I'm not sure how these pots are constructed and whether or not they can be disassembled and repaired. So before I pull this from the board, I wanted your opinion.
I see a couple potential replacements out there, one from Amp Repair Parts (Part #P-VM24-A1M-PS). It looks like a fit. It shows a Marshall part number POTP-00026 but I do have have a parts list for this amp. The schematic shows a Log pot for VR1; I am not sure if the replacements are Audio or Log. That may not be a big deal.
Has anyone repaired or replaced one of these pots?
Thanks, Tom
I have a Marshall 5275 Combo Amp (AKA Marshall 75 Reverb) that has a bad pot, VR1 - the boost gain 1M pot with pull switch. The shaft has lots of play and when you touch it, you can hear an electric connection issue. I don't how to describe that. Unlike other pots, this one has the pull switch attached to the back. I'm not sure how these pots are constructed and whether or not they can be disassembled and repaired. So before I pull this from the board, I wanted your opinion.
I see a couple potential replacements out there, one from Amp Repair Parts (Part #P-VM24-A1M-PS). It looks like a fit. It shows a Marshall part number POTP-00026 but I do have have a parts list for this amp. The schematic shows a Log pot for VR1; I am not sure if the replacements are Audio or Log. That may not be a big deal.
Has anyone repaired or replaced one of these pots?
Thanks, Tom
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