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Fisher with no model #

Richard D

Richard D

Well-Known Member
I am trying to find a schematic for this receiver. On the right front it says, The Fisher
Royal Electra
It is solid state with no model number, on the back panel along with all the audio connectors and speaker outputs is a 6 pin molex connector. There is no cover, I do not know if it came with one, but with that molex connector I think it was part of a system. :scratch2:
Thanks to All,
Richard.
 
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It might help if we could see what you are referring to as a Molex connector. It could be part of a system connection, or it could be the tape interface. Pictures would go a long way to clarifying things. And it gives me a chance to use this for the firsy time :D


:worthless
 
Pictures tomorrow.

Yes, a picture will help, I won't be able to post one until tomorrow, digital camera died. It is a small half inch square white connector. I noticed that it has no tape monitor loops, just an aux input so you may be correct about a tape machine connector. The phono input has a switch marked high & low I guess that's for cartridge output matching. Thanks for your time.
Richard.
 
Fisher frequently rebadged standard model receivers when they were intended to be installed in consoles. That is the case with the Electra. I believe the connector in the back was a hookup with the console's turntable. I had a similar model a while back. When you switched it to phono it would immediately power off. I figured out what was happening, came up with a simple jumper across two of the contacts in that back socket, and it worked perfectly.
 
You are correct, when I turn the input to phono it does shut off. I don't know why I am putting any time in this other than it is old and if it was not helping to clutter my den/workshop/computer room it would have been landfill. I just can't do that.
Richard.
 
It's a very nice receiver, definitely worth keeping, if even for a garage system. I'll look in the archives tomorrow and see if I can find any info.
 
The Royal Electra was part of the modular Consort CO-4 system. This included the receiver, the CO-4S speaker system, and the 401B automatic turntable. The receiver appears to be identical to the Fisher 175-T receiver. I don't have a schematic, but one for the 175 should work.

I actually have the Operating Instructions for the receiver & speakers, the warranty, and the still-blank warranty registration card (void if not mailed within 10 days. Dang!). The operating instructions are dated 1969, and the 175-T is covered in a 1968 Fisher Handbook. Dates printed on Fisher materials do not always correspond to the actual calendar year of printing.

The socket on the back is indeed the Phono Power/Shutoff connector, so it probably has full 120v across two of the contacts. It was designed to turn the receiver off when the record finished playing. If you want to use a turntable with this receiver, you'll need to make a jumper, but be careful NOT to put it across the two power connections.

I sold mine to a golf buddy who loves it. Nice tuner, AM/FM, and 20 w/ch RMS. Nice looking, too!
 
Thanks for all the info, I will look for a schematic for a 175. Strange problem, one channel is fine, the other channel when hooked to an 8 ohm speaker distorts very badly, but if I turn the volume down and and hook my signal tracer to the outputs both channels sound fine, when I hook up the speaker lead the audio in the signal tracer gets distorted. Maybe when under a load one of the output transistors breaks down. There are two large electrolytics, one for each channel in the output section, both test good. Next step check the outputs.
Thanks Again,
Richard.
 
Hey fisherdude or anyone

I have checked the transistors in the bad channel output and they check fine, I also replaced the 1,000mfd. 50v electrolytic on that side with no difference. as a reminder when I listen to the output through my signal tracer it sounds fine if I hook up an 8 ohm speaker it starts to break up and sound bad, when I remove the speaker lead the signal cleans up. What have I missed?
Thanks
Richard. :sigh:
 
Unfortunately, solid state touble-shooting is one of my (many) weak areas. We'll have to wait until somebody more experienced chimes in!

My only suggestion, since one channel is good and one bad, would be to start working backwards in both channels until you find something different between the two.
 
Thank's Fisherdude, I think I will hook up a speaker so it distorts and try to work my way from the outputs to the input section with my signal tracer. This is where a schematic would be a godsend since I dont have access to the bottom of the amp board while it is in circuit. Thanks for your help.
Richard.
 
I know this is an old thread but I thought I'd throw my 0.0000002 cents (deflation).

The Royal Electra IS a Middle of the Line Console (R-494)from 1968-1970. Receiver is a 23R which is a 175-T with a cage over the amp section vs. a heatsink that the 175-T has. They both use the 175-t manual.

Did you ever get the amp fixed?? Mine has no FM. It just hisses. I have a shop record from 1972 says NO FM and replaced zener. So I guess I have to look into the FM Board.

Larry
 
Hi Larry, Still have mine, I had not powered it up in a couple of years so I tried it again and same failure mode. The working channel sounds great. This time I built a small resistor network from the distorting output and then ran it through an amplified speaker and it sounds fine, but as soon as I put a load across the output, a 10 ohm wirewound it starts to distort. As you can see, I never (almost) throw anything away. On a side note the FM section seems great, with just a 12 inch wire for an antenna it receives all the local stations in rock steady stereo with no hiss or noise. Hope you can get your tuner back up.
Richard
 
There's a Bias Adjustment in the 1st 6 pages in the Service Manual. Check the BIAS on the Bad Channel against the specs. It may be way out. Just a SWAG!

Larry.
 
Finally got mine up (mostly). Rebuilt the IF BOARD (Caps, IC's, some Transistors). Now I have FM, but only from 93 to 106 or 88 to 103 depending on where I try to align it (no scope) by matching with another tuner and headphones. As long as I have middle of the band, where the stations I listen to are, I'm happy right now. It's on merrylander's list of things to do. But right now it's running, and it DO SOUND GOOD!

Larry
 
Congratulations! Larry I was thinking and if I don't put mine back on the bench in the next two weeks or so would you want it for shipping charges? The channel that works sounds fine and I am still thinking the channel that is distorted is a bad cap somehere. I will include the factory service mauall.
Regards,
Richard
PS it would be shipped from zip 33157 and you know how heavy they are.
 
I'm still having problems with trying to get this damn thing to track right with respect to getting the WHOLE BAND.

Richard. I'll PM you on the above.

Larry
 
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