Thank you Bountyhunter, Once I saw the name of your file, it gave me the idea of searching google for STA-2000D.pdf and after a couple of clicks, I found the exact service manual. What a difference that makes. I now have the right part#s and I found a miss-wire from the factory.
Two of the identical PNP transitors on the left side of the board had their base and emitter wires swapped. Although the collector wires went from the board to the proper transistors, both the B and E wires coming from the board went to the opposite transistors then that of the collector wires. one of the two that are crossed, is shorted. Not sure if it matters much, but it must have worked that way for many years or it died a short life and has been kicked around ever since.
Anyways, I am going to cancel my order (Still on backorder) and find a direct replacement for the HITACHI 2SD675A NPN and 2SB655A PNP transistor set.
Now that I have the schematics and parts list, I can do a better job checking their little friends.
As always, thanks again for all the help.
Two of the identical PNP transitors on the left side of the board had their base and emitter wires swapped. Although the collector wires went from the board to the proper transistors, both the B and E wires coming from the board went to the opposite transistors then that of the collector wires. one of the two that are crossed, is shorted. Not sure if it matters much, but it must have worked that way for many years or it died a short life and has been kicked around ever since.
Anyways, I am going to cancel my order (Still on backorder) and find a direct replacement for the HITACHI 2SD675A NPN and 2SB655A PNP transistor set.
Now that I have the schematics and parts list, I can do a better job checking their little friends.
As always, thanks again for all the help.