Quote:
Originally Posted by Electronic M
Check your B+ current drain with the set on and off. If it draws current off something is wrong, if the on current is more than 20% higher than the sum of the max plate currents of the tubes data sheets then something is wrong....if the heaters are parallel wired you should be able to troubleshoot by pulling tubes one at a time and observing change in B+ current. The drop in current when a tube is pulled is what it's drawing, and if that exceeds what the data sheet says it should be then the circuit it's in is suspect. If all the tubes are out and its drawing substantial B+ current look for B+ shorts and resistive dividers off the B+.
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Ok, well I know that this radio uses a 2 section power switch and I wonder if the switch section that switches the "B" supply could be stuck on and is causing B+ current draw when the radio power switch is switched off?
The radio was completely recapped so I know leaky caps aren't the cause.
I'll check the power switch and see if that's working correctly, although come to think of it this radio is almost always "instant-on" when I turn it on, which makes me wonder if the B+ isn't actually being switched off by the power switch like it's supposed to be.