Did a good cleaning of all of the tubes today. I also did a good scrubbing of the tuner. I tried moving the horizontal hold in both directions to the maximum. I also changed the channel on the tuner. All of which provided no video. The brightness control works and if I turn it up to maximum I have enough output to see through a phone book I think, the contrast has a very very minimum effect. I was wondering and wanted to ask all of you here is there some test I can run to verify the tuner itself is working versus the if stage not working? Another step I took while working on the underside of the set was to clean up some of my previous work. I decided that I would not accept the level of work I did on this set on future sets so why not start having that work ethic now.
Before:
After:
One other note, I hooked up the speaker to the set and I am also not getting sound output. I do get a very low hum that increases with the set brightness. Can some one tell me what the term for this is called?