admiral 24c15 with 20b1 chassis attempt at restore

[bandersen]

Yep, they're always open.
You can use a 10K - 20W (or better) in parallel with a 56K - 5W resistor.

[Yamamaya42]

Originally Posted by bandersen

Yep, they're always open.
You can use a 10K - 20W (or better) in parallel with a 56K - 5W resistor.

Was I lucky then that mine was OK?

[fumplet]

Im wondering since focus is just voltage supplied from the power supply to the focus coil that a connection issue is up because focus rheostat is good as well as the sand resistor as well as the focus coil itself. I had the tv on its side and ok yeah I got some focus adjustment back, put the tv right side up no focus. Gotta be a connection issue and I suspect that power socket plug rear of tv for starters.
Messed with the horizontal linearity adjustment because it was screwed most of the way out like an inch and almost a half of threads sticking out. I can get picture to stop rolling and almost sync up but not sure what to adjust next unless controls on the back are still way out of adjustment. I tried flipping around the ionmagnet and that made centering a nice bright picture much worse only half the image showed up so I put it back the way it was.
I figured well maybe they messed with the magnet and screwed that up too.
Not sure how the 12k ohm resistor is affecting me getting an actual picture. but focus is still no go.
https://youtu.be/4_xPEqhBqdU

[Chris K]

Originally Posted by Yamamaya42

Was I lucky then that mine was OK?

The dreaded RCA with the horizontal devil still lurking in it has the big 5.3 K resistor that controls horizontal linearity in the HV cage. It is stepped with additional tabs that add 500 and 1 K ohm if you move the lead coming from the horizontal yoke. I was going to replace it with a variable power resistor but it was perfect, dead on 5.3 K. In fact, I had it out of the chassis to clean out the HV cage and was ready to replace it until I measured it. So, yes I guess having a working HV resistor in the horizontal deflection circuit is rare and we are fortunate. I may change it anyway now as I'm trying to eliminate everything as a possible source of the issue.

[fumplet]

If horizontal frequency is different than horizontal lock, horizontal linerity then no i havnt adjusted that one yet....maybe under the set..will have a look. Third adjustment was vert linearity i thought