Hello all! I have a few questions about sick R-81 that I hope you can help with. It used to work fine, but recent attempts to use it have gone poorly.
First, see this binder clip and bit of wood?
What the heck is supposed to be there? I just added them, since without something there it the tone arm crashes into the record grabbing mech. I dont see any broken parts rattling around the bottom though, and the service manual doesn't show anything that I can find. It seems to be necessary to lift the tone arm.
Second, the amp in it is a 100W R-3760B. What service manual would I order to find a schematic for it? The R-81 service manual references a 64W amp. I've found some info about a R-3760A, but not much about mine. It probably needs new caps and other work (sounds like garbage, sticky mute), and I'd like to have an accurate schematic before I give it a shot.
EDIT: Seems that at least the pre-amp board (an R-3758A?) matches the preamp in the R-81 service manual. The rest doesnt seem to
Finally, the record changing mech is super stiff, and often gets stuck or fails to correctly place/pick up the record. Turning it manually is hardest when the records is being returned to the carousel. Any general advice before I take it completely apart? I see a couple stripped gears, but that doesn't seem to be the main issue. We'll see.
Thanks!