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Jeeper390
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Post subject: Fisher schematic Posted: Feb Sat 18, 2012 8:37 pm |
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Joined: Feb Wed 15, 2012 8:17 pm Posts: 16 Location: Herrin, IL
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Hey guys, getting ready to re cap my Fisher 61 amp and I'm in having trouble finding a Sam's schematic for it. Any help would be greatly appreciated!!!
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wiscojim
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Post subject: Re: Fisher schematic Posted: Feb Sat 18, 2012 8:44 pm |
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Joined: Sep Fri 07, 2007 2:27 am Posts: 2666 Location: Appleton, Wisconsin
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Are you sure of the model number - 61? If so, Sam's apparently never covered that one.
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Jeeper390
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Post subject: Re: Fisher schematic Posted: Feb Sat 18, 2012 8:57 pm |
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Joined: Feb Wed 15, 2012 8:17 pm Posts: 16 Location: Herrin, IL
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To be completely honest I'm not. The second digit of the model number is almost completely worn off but as best I can tell it is a 1. Ill post some pics tonight after work, hopefully that will shed some light.
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battradio@
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Post subject: Re: Fisher schematic Posted: Feb Sat 18, 2012 9:29 pm |
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Joined: Jul Fri 18, 2008 10:02 am Posts: 1372 Location: near ST Louis Mo
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it might be a 610
_________________ Mark
(Conti the brain damaged robot )
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Jeeper390
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Post subject: Re: Fisher schematic Posted: Feb Sun 19, 2012 3:26 am |
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Joined: Feb Wed 15, 2012 8:17 pm Posts: 16 Location: Herrin, IL
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 Hopefully these work!
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wiscojim
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Post subject: Re: Fisher schematic Posted: Feb Sun 19, 2012 4:54 am |
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Joined: Sep Fri 07, 2007 2:27 am Posts: 2666 Location: Appleton, Wisconsin
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Johnnysan
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Post subject: Re: Fisher schematic Posted: Feb Sun 19, 2012 4:54 am |
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Joined: Jan Thu 01, 1970 1:00 am Posts: 11441 Location: Albuquerque, NM 87123
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Looks more like 67 to me. It's not in Sams.
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wiscojim
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Post subject: Re: Fisher schematic Posted: Feb Sun 19, 2012 5:00 am |
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Joined: Sep Fri 07, 2007 2:27 am Posts: 2666 Location: Appleton, Wisconsin
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AFAIK Fisher never made a 67. Looks like the font matches the other 1's on the tag.
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Oldbear
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Post subject: Re: Fisher schematic Posted: Feb Sun 19, 2012 3:03 pm |
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Joined: Jan Thu 01, 1970 1:00 am Posts: 3786 Location: St. Louis, MO, USA
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_________________ Terry Davidson
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Jeeper390
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Post subject: Re: Fisher schematic Posted: Feb Sun 19, 2012 4:00 pm |
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Joined: Feb Wed 15, 2012 8:17 pm Posts: 16 Location: Herrin, IL
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It's out of a really well built customized console I picked up for $10 but my guess is thast its not original to whatever that cabinet started out as. I've ruled out the possibility of it being a 610 after finding some pics of a couple 610's after a Google search. The mystery continues for now.
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mescalero
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Post subject: Re: Fisher schematic Posted: Feb Sun 19, 2012 4:34 pm |
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Joined: Feb Thu 24, 2011 1:29 am Posts: 2802 Location: Dallas, TX - in the city but with bobcats and coyotes
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Nice receiver. What is the tube lineup? As for recap, schematics are nice to have but don't let that slow you down. Just do one at a time and take pictures. Digital cameras are very convenient. Also check any carbon comp resistor tolerances, particularly high value ones. Grid bias resistors are critical so give them a peek too.
_________________ In a triode, no one can hear you screen.
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Tom Bavis
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Post subject: Re: Fisher schematic Posted: Feb Sun 19, 2012 4:43 pm |
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Joined: Jan Thu 01, 1970 1:00 am Posts: 3852 Location: Rochester NY USA
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Model 610 was the replacement for the 61 - I would expect them to be similar. Looks like the 5U4 was replaced by 6CA4 and the 6SC7 was replaced by 12AX7. Can't tell if the rest of the tubes are the same...
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Jeeper390
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Post subject: Re: Fisher schematic Posted: Feb Sun 19, 2012 4:51 pm |
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Joined: Feb Wed 15, 2012 8:17 pm Posts: 16 Location: Herrin, IL
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Last edited by Jeeper390 on Feb Sun 19, 2012 7:22 pm, edited 1 time in total.
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Jeeper390
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Post subject: Re: Fisher schematic Posted: Feb Sun 19, 2012 5:45 pm |
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Joined: Feb Wed 15, 2012 8:17 pm Posts: 16 Location: Herrin, IL
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I'd like to have a schematic but as that may be very difficult I guess I should just address the actual problem. When I bought this I was told it worked and when I got it home I tried it out watching it very closely. It worked fine for about 10 minutes when the 5u4 started to redplate. I unplugged it I immediately and now it redplates as soon as its plugged in. I've been told that the can caps are the cause and I'm up for the task if replacing them but as I'm new to this I need some guidance.
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wiscojim
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Post subject: Re: Fisher schematic Posted: Feb Sun 19, 2012 5:51 pm |
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Joined: Sep Fri 07, 2007 2:27 am Posts: 2666 Location: Appleton, Wisconsin
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codefox
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Post subject: Re: Fisher schematic Posted: Feb Sun 19, 2012 6:48 pm |
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Joined: Nov Sat 27, 2010 6:15 pm Posts: 3603
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Please do not give up on this one, it's in marvelous condition. You will be wanting to replace all the filter capacitor components and all the wax paper capacitors before attempting to power on again. It's not rocket science, but does require a little discipline (actually a lot,) and will take some time, maybe months before you get another peep out of it. Restored, it will probably play for another 50 years or the death oa AM, whichever comes first.
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Jeeper390
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Post subject: Re: Fisher schematic Posted: Feb Sun 19, 2012 7:20 pm |
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Joined: Feb Wed 15, 2012 8:17 pm Posts: 16 Location: Herrin, IL
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I'm nit one to give up easily, and I love seeing anything old that's in good working condition. I've got a go.od bit of technical experience, I just have no experience with tube amps. I got lucky with my Maggie console and everything worked well (another $10 find ). Thanks for all your help and I'll keep everyone posted on how its going
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Jeeper390
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Post subject: Re: Fisher schematic Posted: Feb Mon 20, 2012 2:56 am |
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Joined: Feb Wed 15, 2012 8:17 pm Posts: 16 Location: Herrin, IL
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 here's a pick of the console it was in, and a list of tubes: 1 6dc6 1 6u8 3 6bj6's 1 6sc7 1 12ax7 1 6al5 2 el-84's 1 5u4ga
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gus_the_mouse
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Post subject: Re: Fisher schematic Posted: Mar Fri 16, 2012 11:03 pm |
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Joined: Mar Fri 16, 2012 10:46 pm Posts: 1
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Hello, new here (and to old radios) I just ran across this, and seeing as these posts where less than a month old I was wondering if anyone has came across more information, particularly a schematic. I recently bought a fisher 61 series console, described as 'until recently working'. It was in the original console, which I've already mostly disassembled for cleaning and possible re-finishing. I've already discovered one problem - one of the tubes is definitely bad (glass has a fracture, seems to be from rough handling where the metal protector came off and smashed into it. I intend to replace the capacitors before doing anything else, but as I have never worked on any 'pre-ciruct-board' electronics I am afraid to just dive into the rats nest in the chassis without a good chance of getting everything back in the right place. A schematic would certainly be helpful, either as a download or a physical copy to order. Here is a picture of the nameplate: http://i.imgur.com/9qRF8.jpgHere is the chassis: http://i.imgur.com/4kiwq.jpgThanks for any information!
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