Quote from: J M Fahey on January 31, 2009, 11:18:05 PM
Beatiful piece of equipment. Is it a single 240W power amp or two 120 W units? In any case, you´ll find on the net the schematic of a Traynor 100 or 120 W power amplifier, with two MJ802 devices; it should help you repair the one you have, being basically the same.If you can´t, I´ll search it into my poorly organized files .
Thanks. I have not yet found a 100w or 120w amp schematic, but the 200w that I did find has different devices altogether than the YVM-10L. I understand from the Yorkville site and history write-up (http://yorkville.com/downloads/other/yorkvillehistory.pdf) that the amp is the "YPM-250".
The amp is just a heavy single box inside the mixer compartment with two parallel 1/4" speaker outputs labeled "250W 4 ohm". The transformer is heavy-duty!
Here's a picture after I opened it up. The top of the amp case has the 120v fan on the back, and I moved it out of the way (behind the reverb unit mounted on the bottom).
I will continue the search now that I know that the YPM-250 is the schematic I want.
Phil