captouch
Addicted Member
Hi All,
I have a very hard to turn tuning knob on a Yamaha CR-220 receiver. I have it open and applied lube to all the plastic pulleys as well as the rotation points on the wheel of the tuner (brown wheel immediately outside of tuning mechanism). Seems that at least part of the problem is the external knob itself being very hard to turn, though the interior brown wheel is also pretty stiff if I manually turn it. Took some half-hearted attempts to pry the exterior tuning knob off with two spoons to lube around the knob, but not sure if something more fundamental is going on. I know it's not the best idea, but since I couldn't get the knob off, I sprayed some WD-40 (vs lube) where I couldn't reach near exterior knob and immediately behind faceplate, but didn't help much.
To be clear, after doing abovem the exterior knob will turn and span whole frequency range, it's just really, really much harder to turn than it should be.
Anyone have any suggestions?
I have a very hard to turn tuning knob on a Yamaha CR-220 receiver. I have it open and applied lube to all the plastic pulleys as well as the rotation points on the wheel of the tuner (brown wheel immediately outside of tuning mechanism). Seems that at least part of the problem is the external knob itself being very hard to turn, though the interior brown wheel is also pretty stiff if I manually turn it. Took some half-hearted attempts to pry the exterior tuning knob off with two spoons to lube around the knob, but not sure if something more fundamental is going on. I know it's not the best idea, but since I couldn't get the knob off, I sprayed some WD-40 (vs lube) where I couldn't reach near exterior knob and immediately behind faceplate, but didn't help much.
To be clear, after doing abovem the exterior knob will turn and span whole frequency range, it's just really, really much harder to turn than it should be.
Anyone have any suggestions?