Yamaha M-80 Transistor location tr119 and tr125

[Ftlbs]

I'm working on an M-80 and believe TR119 and TR 125 are bad. I can't seem to find the location of them. I see them schematically but not in parts list nor on the main board which is what it looks like on the schematic. Any help is greatly appreciated!

 

[johnfalc]

They are located between the power transistors, against the heatsink. See the images in the service manual. If you don't have that, go to hifiengine.com or take a look here in the manuals section (which may have it - I didn't look, having a local copy already).

 

[Ftlbs]

Thanks. I found TR119 listed as item 73 on the mechanism parts list. TR125 is supposed to be item 74 which I don't see anywhere. There are two smaller transistors per side that are on the heat sink at the X power supplies. Is 125 one of those?

 

[avionic]

TR119 and TR 125 are bad. I can't seem to find the location of them.

They are both located on the upper, narrow , APS power supply board for the left channel. They would be the only two TO-220 transistors mounted to the large heatsinks topside. One is black and one is green if there still the OEM Toshiba's.

 

[Ftlbs]

Thank you very much . I greatly appreciate the help.