Fisher FM50-B Schematic Needed

The-Planet · 26th December 2003, 01:30 PM

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

bournville · 26th December 2003, 02:10 PM

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

The-Planet · 26th December 2003, 02:43 PM

Thanks, pretty inexpensive for the service manual ($5.75).

egellings · 20th January 2013, 07:30 PM

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.

Tom Bavis · 21st January 2013, 01:34 PM

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

egellings · 22nd January 2013, 01:21 AM

Hi, Tom,

egellings · 22nd January 2013, 01:22 AM

Hi, Tom

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

26th December 2003, 01:30 PM	#1
The-Planet diyAudio Member Join Date: Mar 2003 Location: New Hampshire	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

26th December 2003, 02:43 PM	#3
The-Planet diyAudio Member Join Date: Mar 2003 Location: New Hampshire	Thanks Thanks, pretty inexpensive for the service manual ($5.75).

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26th December 2003, 02:10 PM	#2
bournville diyAudio Member Join Date: Feb 2003 Location: Birmingham, UK	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

20th January 2013, 07:30 PM	#4
egellings diyAudio Member Join Date: Aug 2010 Location: CA	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.

21st January 2013, 01:34 PM	#5
Tom Bavis diyAudio Member Join Date: Jun 2002 Location: Macedon NY	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

22nd January 2013, 01:21 AM	#6
egellings diyAudio Member Join Date: Aug 2010 Location: CA	Hi, Tom,

22nd January 2013, 01:22 AM	#7
egellings diyAudio Member Join Date: Aug 2010 Location: CA	Hi, Tom Thanks for the info; I'll check it out. I wonder why the FM50-B information is so obscure.