I am sure that output transistors were working before you touch this unit . (bias problem at the beginnig)
2SA747 et 2SC1116 are not difficult to find , you just need to know where there is no fake Japanese transistors !
Help you with the fact that you don't know that we NEVER work on a charged amplifier is critical
Discharge your big electrolytic capacitors through a resistor NEVER discharge them making a short between contacts !
Check :
- your fuses
- your drivers
-your emiter and fuse resistors
- your output transistors
"rebuild " your amplifier before to switch the power on
I don't feel confortable with your acts