STK1080ii Devices

Perfect job !

For information , my picture of genuine STK .
 

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Repair problem AM-U61
After replacing the STK1080 ii of the right channel, it is not possible to adjust the voltage of 47.7v on the TR6 and TR8 collectors (actually 36v). Transistors, diodes and zener diodes around STK1080 have been tested.I NEED HELP ! Asking for advice. Thank you.
 
Hello, All --
Did an all up Performance Test after playing it for a couple of hours.
The result was 75 V p-p into 8 Ohms, which equates to 87.5 Watts RMS, measured with 1 Khz Input; that is just short of Akai's 88 Watts. That was with only One channel Driven.
No sign of any sort of instability, so that's good.
if Any One wants the Artwork for my PC boards, just ask.
Thanks for all help received; I'm really thankful for that.
Attached is the Output, just short of clipping, as viewed on the 'Scope.
Hello. Great job! I encountered the same problem with the same amplifier. May I ask if other transistors are suitable for replacement? I have TIP122/127 and BD139/140