31___Full B&W Hookup Schematic Models KCLW, FVW 32-36___All Schematics B&W High Resolution Pioneer SX-780 Models, KU, KC, S, S/G Pioneer SX-790 Models, KU, KC, S, S/G Pages: 2-17___Operating Instructions & Owners Manual 18-59___Full High Resolution Service Manual B&W 19___...
The development of the SX-1980 began in the mid-1970s, when Pioneer engineers set out to design a receiver that would surpass their previous flagship model, the SX-1250. The new receiver was to have a power output of 270 watts per channel, which would make it the most powerful receiver ...
With all the info in the internet I was able to get a schematic and other info from audiokarma.org and after firing up the oscilloscope I was able to repair mine after finding 1 bad 2SA726 transistor in the preamp section of the power amp. I replaced 1 .25 cent transistor blew out ...