OK.
(just re-reading my post, when I say "transfer the probe to the other channel" I mean the other channel of the amp, not the other channel of the scope. It could be read either way I think)
(just re-reading my post, when I say "transfer the probe to the other channel" I mean the other channel of the amp, not the other channel of the scope. It could be read either way I think)
It's plugged in and sounding great! 🙂 🙂 🙂
It's got better bass and a more refined midrange than the budget Denon PMA-350SE that I was using temporarily, so it's nice to have it back. After reading this thread, I think I'll stick with my Quad - LINK
Thanks very much for your help Mooly 🙂
It's got better bass and a more refined midrange than the budget Denon PMA-350SE that I was using temporarily, so it's nice to have it back. After reading this thread, I think I'll stick with my Quad - LINK
Thanks very much for your help Mooly 🙂
You're very welcome. A group effort 🙂
Pleased its all working OK now. It was an unusual fault in that DC checks around all the transistors did not show a problem as I recall and yet we could see on the scope the amp lacked any negative current delivery.
With respect, the solution was suggested in post #96 and it was not from Mooly. Credit where credit is due please.
This resistor mounted on the back of the pcb is not a Dada but a Quad modification. I have the same ones on my 306 which was never serviced. You can see it mentioned on the last pcb version (MI2890-3). The yellow diodes are a Dada mod.