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Hoffman Amps Forum image Author Topic: Anyone know what kind of transformer this is?  (Read 4098 times)

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Offline sunset01

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Anyone know what kind of transformer this is?
« on: April 29, 2015, 05:26:09 pm »
Hello,
I inherited an old Holmes solid state guitar amp from the seventies that I'm trying to rebuild. The output transformer
has a few markings on it:       "EJ-205         
                                              EJA  682    80     83"

Can't seem to find anything on it. Anyone know what this transformer is?

Thanks,

RL

Offline sluckey

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Re: Anyone know what kind of transformer this is?
« Reply #1 on: April 29, 2015, 06:19:39 pm »
I thought that by the '70s all OTs had disappeared from SS amps. Are you sure it's from the '70s? Are you sure it's an OT?
A schematic, layout, and hi-rez pics are very useful for troubleshooting your amp. Don't wait to be asked. JUST DO IT!

Offline sunset01

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Re: Anyone know what kind of transformer this is?
« Reply #2 on: April 29, 2015, 06:54:54 pm »
Sluckey,
Thanks for replaying. No, I'm not sure at all what type it is. Just a noob looking up parts still. The second letter has worn off and part of the third, but I could see it being "EIA 682". I just read about Electrical Windings/TMI having that EIA.

RL

Offline shooter

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Re: Anyone know what kind of transformer this is?
« Reply #3 on: April 30, 2015, 09:43:35 am »
here's a schematic link and there are contact  links *IF* it's the right company, fwiw

http://www.harrisonholmes.com/html/schematic.html
Went Class C for efficiency

 


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