Seeburg HFA4-56 Schematic needed

[mozz]

Seeburg HFA4-56 schematic needed. Anyone? 6eu7, 7199, 6l6gc 6l6gc.

This is the 1962 era 60 watt additional amplifier for the Seeburg 1000 Background Music System.

It's not that complex but still would like a schematic to check a few resistors that seem to have been replaced back in 1993. Appears to be ultralinear, fixed bias.

[The Dude]

Does this look the same or similar?

http://arcarc.xmission.com/PDF_Jukeb...tics/shfa4.pdf

Maybe one channel of it?

[mozz]

Thanks. I looked at a few like that and the 7199 part is pretty much the same. This has no transistors but a solid state rectifier. Tracing it out last night the replaced resistors seem to be just dropping node resistors, so hopefully the original repair used the correct values.

Guy dropped off 2 amps, the Seeburg was the best of the 2, here is the other one.

[J M Fahey]

Hey!!! be careful what you do with my cradle !!!

[vintagekiki]

Seeburg Schematics

http://arcarc.xmission.com/PDF_Jukebox/Seeburg/Schematics/

http://www.4tubes.com/SCHEMATICS/Music-amps/Seeburg/

http://www.verntisdale.com/Seeburgschem.htm

http://carlhaines.com/jukebox/jukeschematics.html

https://elektrotanya.com/?q=showresult&what=seeburg

https://www.electronica-pt.com/esquema/old-tv/seeburg-varios-modelos-31982/

http://jukeboxwiz.com/resources/manuals

https://www.manualslib.com/brand/seeburg/

http://wsz.f.free.fr/docs/Seeburg-M100B.pdf

http://wsz.f.free.fr/docs/Seeburg_Thierry04/SE100%5b1%5d.pdf

[mozz]

Thanks but not the one i need. I have pieced together enough info on the 6eu7, 7199 circuits to check them out.

[Enzo]

My experience with the Old Seeburgs is that all the paper (film type) caps will need replacement for leakage.