SharkBait07
New Member
Are the TR707 and TR708 emitter pin correctly depicted on the Yamaha CR-2020 relay board diagram?
That is to say, does the black pin on TR707 and TR708 correctly identify the placement of the transistor emitter?
Leaning on Oilmaster's wonderful diagram description on his post, the rightmost pin of TR707 and the leftmost pin of TR708 is where the emitter is placed.
https://audiokarma.org/forums/index...toration-guidance.798122/page-8#post-11227950
After taken pictures of the board, I pulled the two transistors to test. Both are original parts based on the letters on the bodies that tested in spec.
TR707--> 2SC1213A
TR708--> 2SA673A
After identifying the emitter pin and following the diagram, the two transistors would be facing the opposite physical direction. I am a newb and unsure. In the pictures taken and found online both transistors face the same physical direction, with the small slopes side facing the from of the receiver.
Should the transistors be put back in facing in the opposite direction from each other based on the diagram and tests, should they be put back in based on pictures (the small sloped side facing forward), or something else?
That is to say, does the black pin on TR707 and TR708 correctly identify the placement of the transistor emitter?
Leaning on Oilmaster's wonderful diagram description on his post, the rightmost pin of TR707 and the leftmost pin of TR708 is where the emitter is placed.
https://audiokarma.org/forums/index...toration-guidance.798122/page-8#post-11227950
After taken pictures of the board, I pulled the two transistors to test. Both are original parts based on the letters on the bodies that tested in spec.
TR707--> 2SC1213A
TR708--> 2SA673A
After identifying the emitter pin and following the diagram, the two transistors would be facing the opposite physical direction. I am a newb and unsure. In the pictures taken and found online both transistors face the same physical direction, with the small slopes side facing the from of the receiver.
Should the transistors be put back in facing in the opposite direction from each other based on the diagram and tests, should they be put back in based on pictures (the small sloped side facing forward), or something else?
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