This is my Integra 732, outside and inside.
All connection wiring goes from a top cover to the back.....
It has one preamp channel defective (tape is okay) and unfortunately, some front text paint...
therefore, please contact me if you have a schematic!!! It seems nowhere to be found, it would make troubleshooting easier as it has some rather complicated wiring inside as you can see on the pictures...
for a 1972 amp, it is quite impressive, 2 x 56 watts and a moving coil input..
Ive got an awesome tx8500 on my main with some ads l710. Sounds killer.
I've owned several Onkyo & Onkyo Integra pieces over the years. My first Integra purchase was this cassette deck in the mid 1980's. I just sold it on ebay. All it needed was a belt replacement but it only fetched $17.00. I paid $500.00 back in the day, and that translates North of $1000 in adjusted $. No more "no reserve!" ebay sales for this boy.