Hi all , I have a Bryston powerpac 120 which powers my pmc center channel speaker , I was watching a film last night and noticed it had shut down , It was very hot to touch so I assume a thermal shutdown , I opened it up this morning , it looks quite clean inside , there is 2.5mv dc on the speaker outputs .
I measured the voltage across the .22 Ω emitter resistors , see photos , I also had a look with the thermal camera and found a hot resistor at 129° C there are a couple of transistors near which are around 75° ,these temps were with no input .
Would this be causing the shutdown issue , It did power up and work again and has been running ok since .
I would like to repair this and any pointers would be appreciated .
These are the resistors which are getting hot .
