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Discussion in 'The Workbench' started by LayLow87, Jun 22, 2019.
Should it feel 'heavier to turn' than the other knobs? just trying to figure out whats been replaced over time. all seem to be the same except the gain pot on the boost channel which is a lot slower to turn.
Mine did not. Felt just like the rest.
thanks, guess its been replaced then! darn
I would swap that .0022 box cap in the 1987S for a .022 cap. Just sayin...
I wouldn't come to that conclusion based on how it feels. It may be just stiff, and needs lube. I would clean the pots with a lubricating cleaner..And imo replacing pots before trying to remedy scratchiness or stiffness with a cleaner/lube isn't proper proccedure. In my experience, 99% of the time cleaning the pot takes care of the problem.
Thanks, hopefully thats it then. if it did need to be replaced (RE: this thread) what part would I use to restore it to original?
I do believe that pot, being pcb mounted is very hard to find, and I don't think you'll find a "restoration" correct one. But Not 100% certain on that as I haven't had to replace one, but I have heard of guys having to use a standard pot and run fly leads to the board.
What year/revision 2205? It makes a difference.
Are the pots on yours splined or solid?
Just whipped the knobs off, looks like an original matched set of solid shaft pots so guess the gain pot just need a lube!
YES, just try cleaning them with good lubricated cleaner. Trust me, if you start replacing all those old pots, you are going to lose the MaGiK Mojo in those vintage amps!
1984 was a transistion period. It could have a 2 gang potentiometer but it may be separates as well.
Open it to see. Give pictures if possible.
My 87 was splined.
Ok thanks! Unless these were all replaced at the same Time many moons ago I’m guessing these are an original set of solid shafts that came with. So
No restoring necessary except lubricating that gain knob. Thanks for the input man.
Thanks! It’s an early 84 too. Early February to be precise. Will crack it open hopefully soon
The 1987 is a reissue too (albeit an early one 1988), which values would they have?