05-22-2016, 02:16 AM
Hello,
New member here with a console that I've recapped and have the AM and Phono inputs working well, but have nothing at all on the FM. I've read other threads on this model and the FM problem and have tried the things I've read about, but with no luck. I do not have a working signal generator and have not yet learned to use one (I do have a Hickok 288AX that needs to be recapped). Anyway, here's what I've done so far:
New power supply caps
Changed out wax and paper capacitors
New tubes
Replaced C412 (100pF) and C413 (220pF) as suggested
Checked pin voltages - all look good and are within 20% of the target voltages
Cleaned all bandswitch contacts (emery cloth and deoxit)
Cleaned socket and pins of the 7F8
Reflowed solder on most socket pins and terminal strips
Checked all coils for restance per the Philco service manual - no shorts as far as I can see
I could use some guidance about what to try next. Thanks!
Richard
New member here with a console that I've recapped and have the AM and Phono inputs working well, but have nothing at all on the FM. I've read other threads on this model and the FM problem and have tried the things I've read about, but with no luck. I do not have a working signal generator and have not yet learned to use one (I do have a Hickok 288AX that needs to be recapped). Anyway, here's what I've done so far:
New power supply caps
Changed out wax and paper capacitors
New tubes
Replaced C412 (100pF) and C413 (220pF) as suggested
Checked pin voltages - all look good and are within 20% of the target voltages
Cleaned all bandswitch contacts (emery cloth and deoxit)
Cleaned socket and pins of the 7F8
Reflowed solder on most socket pins and terminal strips
Checked all coils for restance per the Philco service manual - no shorts as far as I can see
I could use some guidance about what to try next. Thanks!
Richard
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