[Boatanchors] RCA 811K

[Bob Young]

I brought up an RCA 811K console that I've had for a few years on a Variac tonight. I know it needs to be recapped, it use to hum pretty loud which is why I shut it off until I had the time to recap it which is now. Anyway the radio did not hum tonight but worked much better at approx 75 V than at 115, it got progressively more distorted, softer in volume and less sensitive when brought up to 115, when brought back down to about 75 it performed much better. (it did hum at first until I switched a bandswitch knob, the hum went away
as did the background receiver noise) Does this indicate that perhaps an electrolytic has shorted out? I didn't keep it on for too long, the power trannsformer was still cold along two of the cans, one was warm. I am going to replace all three but just thought I'd ask the group what it thought. I haven't pulled it apart yet, I'll also be replacing all paper caps and/or BB's.

Bob Young
Analog, MA
KB1OKL

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