If all else fails and you cannot find the correct pot for it then you might try using two resistors for each "layer" of the pot (there are probably two sections)that add up to 2K ohm and solder them in as a permenant setting to replace the pot. Maybe choose a value like 1.5K for one resister and .5K for the other. This would set your volumn to about three quarters of full. It's not necesarily a good solution, but it will get your amp going again. P.S. It may be a 2.5 K pot with two sections. Good luck.
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