Toshiba SA-850

Needing help on this unit or if anyone has a service manual that would be awesome, Here is the symptom no left channel sound, it does come out of protection mode, my input voltages to the relay are 33 volts right side and 17 volts left side . Unfortunately it has been worked on prior to me , I am not sure if maybe some of the components have been switched out and or placed in the wrong spot. , the 33 volts on the right side passes through a diode to feed the left side of the relay. But without a service manual I don't know if the diode is correct. Also I have a complementary set of transistors sc1625 and sa815 that have been inverted prior to the power transistor or mosfet, the 2 other sets of complementary transistors are both in the same position prior to the power transistor, or Mosfet. Any and all help is appreciated.