RCA 630TCS sudden failure (set was recapped few years ago)

[Yamamaya42]

may I ask why they were replaced? were they ALL bad? on mine, only one of the candohm sections was about 30% off, so i bypassed it, i prob did not need to, but did anyway, the values and powers are VERY hard to find... and I would think only replaced if you REALLY need to.

[bigaudioal]

Originally Posted by Yamamaya42

may I ask why they were replaced? were they ALL bad? on mine, only one of the candohm sections was about 30% off, so i bypassed it, i prob did not need to, but did anyway, the values and powers are VERY hard to find... and I would think only replaced if you REALLY need to.

I replaced them because they needed to be replaced. The ceramic one was totally open and the candohm was over 70% out of tolerance.

[Yamamaya42]

Originally Posted by bigaudioal

I replaced them because they needed to be replaced. The ceramic one was totally open and the candohm was over 70% out of tolerance.

i guess i was lucky then, but then again, mine was sitting in a basement wall unused since the early 70s.

[JohnCT]

Originally Posted by Yamamaya42

may I ask why they were replaced? were they ALL bad? on mine, only one of the candohm sections was about 30% off, so i bypassed it, i prob did not need to, but did anyway, the values and powers are VERY hard to find... and I would think only replaced if you REALLY need to.

Long ago when these were just old TVs and radios, I used to jump out bad sections of candohm resistors with a terminal and fixed resistor, but these things are so old now that there's a good chance the rest of the sections may start acting up later and perhaps sooner, and I've had a few that got leaky to ground as well.

I guess if I ran into a candohm that was good, I'd be inclined to leave it in. But once one section fails, out it comes.

John