Question for the group
For my Marantz 2325, I bought a new p700 board for the right amp ( designed for the a1381e/c3503d), this allows for no twisting of those transistors. Now before, with the old board (after using a kit with new transistors/caps and diodes) I was getting 60.xx volts on J702-709 and of course the speaker protection relay won’t click in. I had what I thought was some sketchy traces so I bought the new board mentioned earlier. I measured every component before soldering into the new board and I still am getting 60.xx volts on j702-709. Now, the untouched left amp module when connected allows the speaker relay to click in. On the right amp I measured each of the output transistors and the HFE appeared very low (19-30). So, I measured the good ones from the left amp and they were over 100, so I put those into the troubled right amp. I still get the 60 volts on all the J terminals. What could I be missing?
For my Marantz 2325, I bought a new p700 board for the right amp ( designed for the a1381e/c3503d), this allows for no twisting of those transistors. Now before, with the old board (after using a kit with new transistors/caps and diodes) I was getting 60.xx volts on J702-709 and of course the speaker protection relay won’t click in. I had what I thought was some sketchy traces so I bought the new board mentioned earlier. I measured every component before soldering into the new board and I still am getting 60.xx volts on j702-709. Now, the untouched left amp module when connected allows the speaker relay to click in. On the right amp I measured each of the output transistors and the HFE appeared very low (19-30). So, I measured the good ones from the left amp and they were over 100, so I put those into the troubled right amp. I still get the 60 volts on all the J terminals. What could I be missing?
Can you please include any schematics or pictures if you're using any to reference? It's hard to judge what J702 and J709 are or are connected to without any context. I don't know what the 60 odd volts there means until I know where it's being measured in a circuit.