|
The tuner is a turret style tuner. I did remove it once before and cleaned each (bump?) with contact cleaner sprayed onto, and then applied with, a Q-tip. I also used cleaned the contacts in the set the same way. Is there anything inside the turret that would benefit disassembled it and cleaned it with a similar method?
The fine tuning does affect the picture. It's kind of hard to describe but it's almost like there is two pictures one on top of the other. The "top" picture has some wavy lines that go from the top of the screen to the bottom. Then there is the "bottom" picture which is the signal from the VCR. The bottom picture as well as the sound are affected by fine tuning. The sound gets quieter and a bit distorted, and the "bottom" picture gets softer at one end of the fine tuning rotation. The sound gets louder and more crisp and the picture gets sharper at the other end of the ft rotation. I don't think the change in picture would show up in a video as it's pretty tough to see with my own eyes.
I'm going to take a second look at all of the connections (and values) of things in the vertical section to see if I can't find something jumping out at me that might explain the problem towards the top of the screen tonight. If the tuner could benefit from an internal cleaning I'll try to get that done as well. My friend at work gave me a can of Tun-O-Wash so I'll can give that a shot.
|