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REC.ANTIQUES.RADIO+PHONO
Next repair
From
philo
@21:1/5 to
All
on Wed Jul 17 19:40:54 2019
Got two radios repaired yesterday, now working on a Crosley 124 that I
worked on a few years ago. All it needed then was new filter caps.
Almost zero audio output.
Pair of 47's in the final audio
I have a speaker with audio transformer I can put across the output
stage to confirm it's not a speaker or audio transformer problem
voice coil is good and has voltage on it.
If I put my test speaker to the input stage of the 47's I get a moderate
audio signal so I know it's the last stage.
One of the 47's tests low emission on my tube tester but works ok in
another radio. Also tried different tubes.
A bit stumped for now as there really isn't that much more to test in
the output stage.
--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)
From
Philip Kassner
@21:1/5 to
All
on Fri Jul 19 15:17:59 2019
Not sure if you guys have Google Groups filtered but that's all I have on my phone.
The output stage is grounded by a 220 ohm wire resistor.
It's open and when I put a resistor in there...the radio now works!
Were it not for the schematic I probably never would have thought to check it.
--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)
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