Early RCA Horizontal Circuitry...Help!

[kf4rca]

More on the synchroguide circuit here:
http://rca.vobj.org/RCA%20Engineer/R...ignHistory.pdf

[Chris K]

I finished getting the rig setup and it fits on the chassis just fine. I found a loose HV anode cable and soldered two alligator clips together back-to-back to finish the connection from the cage to the 5AXP4. I wish I had a small metalworking lathe so I could turn a custom connector. This anode wire at the cage end is not bare wired rather, it has a socket on the end just like the HV connector on the RCA chassis. Can't remember where I got it but it must have been from a TV with an unconventional anode HV cage connector or it's an anode extender for powering a CRT further from a chassis. The forked end that connects to the CRT fits firmly in the other end of the wire so a fork terminated anode from a TV's HV output can connect to it giving you another 18" of travel. I think my setup is about as safe as can be on one of these metal CRT TVs.

[teevee]

Do a query on "Synchroguide". If you can find the Jack Darr book on servicing television horizontal circuits, that has a great explination of how to adjust this circuit. (Start by jumpering the waveform coil)

For the more esoteric description, see: http://rca.vobj.org/RCA%20Engineer/R...ignHistory.pdf

[Chris K]

Thanks for the heads up! The flyback in the unrestored TV is open on the primary side between test points 2 and 3. If I measure continuity between 1 and 2, it's fine but it's open between 2-3 and 1 and 3. The ETF says it has one, part #75519, but who knows if they'll be able to find it.

[Kevin Kuehn]

Sent you a pm.