12-23-2017, 06:14 PM
As much as I do not like powering up a unit that is as old as I am, running on original components...I did so and found that the seller was quite truthful.
It plays very well on AM.
FM is, indeed, dead.
After some initial voltage checks I thought I had found the culprit - the 3rd IF transformer was open. I replaced it with one from a Fisher FM-50-B junker.
That brought back the plate voltage on the 2nd IF amp tube...but still no FM.
More troubleshooting is in order. I am going to try to get this tuner going again before replacing all electrolytics as well as the original selenium rectifier used to convert the filaments of the audio preamp tubes from AC to DC.
It plays very well on AM.
FM is, indeed, dead.
After some initial voltage checks I thought I had found the culprit - the 3rd IF transformer was open. I replaced it with one from a Fisher FM-50-B junker.
That brought back the plate voltage on the 2nd IF amp tube...but still no FM.
More troubleshooting is in order. I am going to try to get this tuner going again before replacing all electrolytics as well as the original selenium rectifier used to convert the filaments of the audio preamp tubes from AC to DC.
--
Ron Ramirez
Ferdinand IN
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