I have a Yamaha AVR RX-V496 that I use in my office for my iTunes playback. It has an optical audio input so it is very convenient to take the optical audio out from my Mac Pro.
The right channel has become intermittent and scratchy and twiddling the volume control clears it up for a while. I thought that a spritz of DeOxit might clean it up. I removed the volume control which is mounted on a PCB, but I don't see a way to spray inside it unless?. Do I dare try to pry off the black plastic cover shown in the pictures? Or will I muck it up permanently. Is the correct procedure to replace the entire board? Or should I refer this to qualified service personnel?
The four holes around the knob don't connect to the interior of the control, they are just part of the casting.