Please help identifying output transistors

[ernestas0001]

Hi !
So it happens to be that I have acquired a Yamaha RX-V4600.
It is a rather difficult machine with self diagnostic system and it seems to have a problem with at least one of the output transistors.
Could you be so kind and direct me towards them as I inspected service manual, but got completely lost in the whole schematic menace and receiver has quite a few of different types.

Best regards,

Ernie

 

[Enzo]

perhaps if you made that schematic available here? Some of us are experienced schematic readers, not to mention the parts lists Yamaha includes.

 

[rayma]

it seems to have a problem with at least one of the output transistors.

2SA1492/2SC3856

See pages 91 and 113.
Yamaha RX-V4600 - Manual - Audio Video Receiver - HiFi Engine

 

[JonSnell Electronic]

This machine has very simple complimentary output stage amplifiers comprising of 2SA1837 and 2SC4793 pairs as drivers with 2SA1492 and 2SC3856 outputs mounted on the heatsink.

Don't forget to check the driver transistors.

 

[Enzo]

And any resistor associated with those transistors.