So the first receiver I ever bought, my Kenwood VR-507 is in use down in the basement on my workbench. It has suited me well, well powered and has been a great piece to have. I bought it in the UK when I was stationed in England, so it is a dual voltage version, which to my understanding is pretty rare to find here in the states.
The remote crapped out forever ago, apparently the IR sensor on the inside of the machine was known to go bad on these things, and I never really cared as I was usually close to it anyway, but the volume knob problem I am having is driving me insane. This is the unit I use to test anything, and for music while I am working on god knows what

The volume knob doesn't respond well unless you turn it slower than you thought you could turn anything. If you even remotely turn it like a normal person would, the dB number on the screen goes all over the place, and typically settles where you started, sometimes going lower. This makes it tough when you need to quickly turn down the volume for something important, as that is not really an option.
Anyone know anything about this type of problem or what would be entailed in repairing. Not really trying to dump a lot of money in it, but also don't want to spend alot replacing it either. Its good for 100 watts per channel stereo, or 140 if I run it on 220 at 8 ohms. Nice headroom to test just about anything. Things weighs like 50 lbs I swear.
From my limited understanding, its something like a rotary encoder, not a typical potentiometer, but I could be wrong on that as well. Any suggestions on how to fix it myself or who to bring it to for a reasonable price would be hugely appreciated!
Jeff
Couple addendums, I know little to nothing about electronics. I understand car wiring, house wiring, and crossover networks to a minimal degree, but as to what goes on in that black box? Nada. Just wanted to put that out there