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46-480 Power Transformer Vibrates
#1

I performed a complete restoration on this set about 4 years ago. All components are that old. It's been working great until recently.

I removed all the tubes and they all test good. I powered the set up with no tubes in it and all the transformer output voltages look good. I see no fried components. The person said they saw a little smoke coming from the power transformer and the radio just had a hum to it that the volume control had no affect on.

That's all I've done today after a 6 hour drive and there's more testing to be done of course.

I'm wondering if anyone has had a transformer that acted like this. The transformer makes no audible noise but placing my hand on it, it feels like a vibration coming from it. It doesn't get warm but again, it's under no load at this time. The humming from the speaker may tell me a filter cap has gone bad on me but I don't recall a transformer having this vibration.

Any preliminary ideas would be appreciated. I'll be doing more testing in the morning.

Thanks,
Perreroni (Johnny)

"It's Nice To Be Nice To The Nice"
Major Frank Burns Mash 4077th


Messages In This Thread
46-480 Power Transformer Vibrates - by Pepperoni - 07-28-2013, 10:18 PM
RE: 46-480 Power Transformer Vibrates - by EricS - 09-17-2013, 07:09 PM



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