hifi engine

TEAC TA-680 Service manual/Schematic Wanted

I am currently attempting to repair a TEAC TA-680 tuner/amp for a friend and a service manual or schematic would be a big help.
The fault seems to be in the amp section which uses a STK4192 II amp module.R707L and R706L are running very hot.These are the LH amp bootstrap resistors. I have replaced C705L , a 47uf electro which was low C and bulged