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Fisher FM50-B Schematic Needed
Fisher FM50-B Schematic Needed
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Old 26th December 2003, 02:30 PM   #1
The-Planet is offline The-Planet  United States
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Default Fisher FM50-B Schematic Needed

Anyone have a copy of the Schematic (or better yet, the service manual ) for a Fisher FM-50B tuner?

I have a nice FM50B here that has started dropping out one channel when it warms up.

Many thanks,

- Gary
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Old 26th December 2003, 03:10 PM   #2
bournville is offline bournville  United Kingdom
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If you can't get one from any other source, you can buy one from these people reasonably priced:

http://www.manualman.com/catalog/news14.htm
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Old 26th December 2003, 03:43 PM   #3
The-Planet is offline The-Planet  United States
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Thanks, pretty inexpensive for the service manual ($5.75).
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Old 20th January 2013, 08:30 PM   #4
egellings is offline egellings  United States
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I have one of these tuners, too, and both channels played very faintly. If I yanked out the 12AX7 audio amp tube, there was no difference. Turned out that the two 0.1uF coupling caps near the tube were open. Replacing those brought it back to life. I'm looking for a service manual, too. Finally figured out how to re-string the dial cord. Nice little puzzle to solve.
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Old 21st January 2013, 02:34 PM   #5
Tom Bavis is offline Tom Bavis
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FM-50 (no 'B') manual is online at fisherconsoles.com. Likewise, FM-50 is covered in Sams Photofact folder 553-6, but 50B isn't listed. I've heard that KM-60 is the kit version of the FM-50B - that one is at Fisherconsoles.com
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Old 22nd January 2013, 02:21 AM   #6
egellings is offline egellings  United States
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Hi, Tom,
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Old 22nd January 2013, 02:22 AM   #7
egellings is offline egellings  United States
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Hi, Tom

Thanks for the info; I'll check it out. I wonder why the FM50-B information is so obscure.
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