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 Post subject: zenith cobramatic, chassis 3m02 schematic
PostPosted: May Fri 22, 2020 2:16 am 
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Joined: May Wed 02, 2018 2:09 pm
Posts: 36
i got one f these old ones, and i was hoping for a schematic/service manual for the amp but also the record changer that i didnt have to pay for, if anyone can help, i thank you in advance if not i will just have to suck it up and pay the schematic man. it looks like a really cool record player, the amp has a transformer 6x5, 6v6 and 12au7 and the changer has a really light molded plastic arm that shouldnt be hard on the records, i managed to find a new cartridge with .7mm stylus . honestly, i can probably shotgun the paper/wax caps and electrolytic and just really more so need a service manual for the changer. anyway thought i would try.


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 Post subject: Re: zenith cobramatic, chassis 3m02 schematic
PostPosted: May Fri 22, 2020 3:12 am 
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Joined: Jan Wed 16, 2013 12:04 am
Posts: 1731
Location: 77001
Zenith Chassis 3M02 free here:

Schematic is on page 152 of the pdf file.

https://www.americanradiohistory.com/Ar ... n-1954.pdf


There is a 1951 Cobra changer also at Beitman's. I don't believe there
was much, if any change in the basic changer mech.

See page 161 onwards of pdf file.

https://www.americanradiohistory.com/Ar ... n-1951.pdf

Hotwax


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 Post subject: Re: zenith cobramatic, chassis 3m02 schematic
PostPosted: May Sat 23, 2020 1:31 am 
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Joined: May Wed 02, 2018 2:09 pm
Posts: 36
you are the man


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 Post subject: Re: zenith cobramatic, chassis 3m02 schematic
PostPosted: May Sat 23, 2020 5:18 am 
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Joined: May Wed 02, 2018 2:09 pm
Posts: 36
the amp schem is right on, not sure about the changer it looks similar although mine has the stroboscope feature and from what i read pre 1954 it used a radionic cartridge and it changed in 1954 -58 after which they went to the microtouch changer which was a v.o.m. type which i have a few of and know well. this 1954-58 cobramatic stroboscope model is what i have and hope to refurb. i do like the v.o.m. changers as i have rebuilt a few and they work well. 2 of my g.e. record players have the v.o.m. changers. i have a 59 musaphonic console and a trimline 300 that after some work perform perfectly. i want to get this cobramatic working right as i think it will be a good system.


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