Newbie's First Questions RCA TS 721 Restoration

[Chris K]

Thanks guys! It feels pretty good. It needs some additional tweaking but where it is now compared to where it was...all I can say is Yippee!

[Notimetolooz]

Yeah, you just have to stay with it. TVs are complex and there can be more than one bad part.
You do have to make sure you are doing things correctly like cleaning pots.
You don't want to make more problems. You might not have done anything wrong but the guy that worked on it before may have.

[kvflyer]

Yes, that looks "Mo Bettah"! Congratulations. I had a problem with my Admiral set that turned out being tin whiskers in the control. A good tooth brushing and it fixed that. First time I had experienced it and I was surprised, but pleased.

[Chris K]

Originally Posted by kvflyer

Yes, that looks "Mo Bettah"! Congratulations. I had a problem with my Admiral set that turned out being tin whiskers in the control. A good tooth brushing and it fixed that. First time I had experienced it and I was surprised, but pleased.

Those Admirals grew whiskers like Santa Claus! I wonder what kind of metal alloy they used where that was such a common problem across so many TVs for so many years? Thanks for the congrats!

[Chris K]

Originally Posted by Notimetolooz

Yeah, you just have to stay with it. TVs are complex and there can be more than one bad part.
You do have to make sure you are doing things correctly like cleaning pots.
You don't want to make more problems. You might not have done anything wrong but the guy that worked on it before may have.

Oh I screwed the pooch...no question. The set was virgin. You can only access the insides of the rear adjustment pots for spray cleaning by removing them. There's no access from the front and I ended up not having to replace the vertical height control. About half an hour of spraying and twisting did the job. It's clean and smooth now from 2.4 megs all the way down to next to nothing. The entire chassis is now rewired, recapped and clean. Next mountain to climb is the sound. It's working as I get crackle but no processing of a signal from the generator. This set's a bear! Fighting me to the last tube, coil and transformer!