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Philco 46-350 Dead
08-26-2016, 08:18 AM
I rebuilt the electrolytic and fired it up. Volume was low and sound distorted. Tested all tubes. For a while plate and screen voltages were correct, but now they measure 120V! Where to start? Can this be a problem with the AC/battery switch?
08-26-2016, 09:40 AM
Clean AC/Battery sw and check R-12.
When my pals were reading comic books I was down in the basement in my dad's workshop. Perusing his Sam's Photofoacts Vol 1-50 admiring the old set and trying to figure out what all those squiggly meant. Circa 1966 Now I think I've got! Terry
08-26-2016, 10:53 AM
Flushed switch with Deoxit. R12 checks OK. No change.
Thank you
08-27-2016, 04:47 PM
Update...
Talked w/ Dale on the phone to find that he have a bad connection in the filament circuit. With the filaments not conducting there is no load on the HV supply that's why the HV was too high. After cleaning up the tube sockets it was sort of working. It also had a very leaky .004 coupling cap at the audio output tube's control grid. After replacement it working much better. When my pals were reading comic books I was down in the basement in my dad's workshop. Perusing his Sam's Photofoacts Vol 1-50 admiring the old set and trying to figure out what all those squiggly meant. Circa 1966 Now I think I've got! Terry
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