I'm pretty sure that TV Tuner cleaner is the same deal as contact cleaner, that is what I normally use for issues like this. Anwyays, it should be like a can of WD40 with a squirt wand thingy. If the volume control will pull off from the front it would be best to take it off first. Make sure the power is off, then spray the shit out of your volume control. It'll freak you out a bit as there is quite a bit of liquid that comes out but just go to town on it and then work it back and forth a bunch. You should find that it's good to go after that although quite often you still have to do it once or twice a year. If there are other controls on the front such as source and tone controls, you may as well do those at the same time. Good luck, shouldn't need it though...