I've checked some of the components to the schematic right of Q1404 (Q1408, R1406, R1402, etc, and randomly most of the nearby components), at least in-circuit for continuity. Determining if a component is open (rather than shorted) is a bit more complicated, and I haven't wanted to unsolder components indiscriminately. As stated earlier in the thread, the CRT circuit had been working until I accidentally must have shorted out something when I was looking at the low voltage measurements, so I'm not thinking it likely that a leaky capacitor or intermittent switch is the main culprit at this point.
Obviously my circuit skills are minimal, but I'm still bothered by the readings involving R1431, as given above. They seem so off to me, and since F1419 and C1419 _appear_ to be OK, my attention has been pulled to R1431. But if you feel that would not logically be the cause of my problem, then maybe I need to put more attention into the rest of the CRT circuit (all the components between Q1404 and T1420).
Actually, now that I am recalling my earlier blunder, I think what happened was this: while checking one of the low voltage supplies (don't know which one) I accidentally had my meter set for current instead of voltage (wrong button pushed). I remember hearing a strange sound, which may have been from loading the circuit, before I realized my mistake and disconnected. It wasn¡¯t until later that I noticed the trace had disappeared, and since there wasn't any smoke/drama I didn't realize until later that I must have burned something out. I'm guessing, in case this might help suggest a path forward.
I wish there was an easy way to check L1419 and T1420, but accessing or testing them easily eludes me.
Keith
Keith
