|
OK, So a little update on this radio, I was able to get this thing to put out some audio, but its only coming out of the left channel, and its only coming out of the midradge and tweeter the woofer isn't working at all and the volume had to be cranked up full blast to even hear the audio.
I checked the preamp tubes (the 12AX7s that go before the 6BQ5s as this is a push-pull system) and they were fine (I tested them out in my Zenith Console amplifier) and 12AX7s didn't seem to be the problem.
Next I checked the 6BQ5s and there was nothing wrong with those either (they checked excellent on the tube checker) and just to be on the safe side I subbed in some known good 6BQ5s in my tube stash and still no dice.
Then I thought maybe I should try checking the 6CA4 rectifier tube, and I tested it out on my tube checker (a knight kit unit) and it pegged out the meter on the good side but then I checked the tube for shorts and pin 3 was glowing on the shorts test (it glowed for about 3 seconds and then slowly dimmed out.)
My question is, bringing up the idea that was brought up earlier about the low B+, would a bad or failing rectifier tube cause a symptom like that (low B+)?
|