Rca 730tv1

[M3-SRT8]

Width Controls seem to vary in sensitivity from brand to brand, set to set, etc.

The RCAs that I own of that same vintage (721TS, 721TCS, 630TS) seem to need quite a few turns of the Width Control before you get any change.

Now, my 1950 Zenith 12" Porthole, with the Width Control on a slider, is way more sensitive. You breathe on it and you get a change.

[vts1134]

Originally Posted by M3-SRT8

Width Controls seem to vary in sensitivity from brand to brand, set to set, etc.

The RCAs that I own of that same vintage (721TS, 721TCS, 630TS) seem to need quite a few turns of the Width Control before you get any change.

Now, my 1950 Zenith 12" Porthole, with the Width Control on a slider, is way more sensitive. You breathe on it and you get a change.

I'll give width another shot when I get back in front of the set.
Thanks for the first hand knowledge, it makes things easier and less scary for sure.

[Phil Nelson]

Don't be scared by a little bubbling on the wax around the coil. The big question is whether the windings have continuity and whether the adjuster has any effect at all.

Horizontal linearity is one of the more difficult things to get right on certain TVs (difficult for me, anyhow). Your linearity is noticeably off when viewing a test pattern. I doubt it is half as noticeable if you are simply watching a movie or TV show.

I would follow the instructions in the manual, as suggested, and then see how it looks.

Phil Nelson

[Penthode]

I suspect that all that is wrong is the 6BG6. Try substituting a new one.