NAD C320bee DC issue Please help!

[dj_holmes]

Guys to inform you it turns out there was a fault with one of the modules in the preamp section. A shorted capacitor that a friend found and fixed!!

 

[fubar3]

Well I fitted a carbon 0.5w 33r resistor and puff of smoke 🙁

I turned it off immediately, no fuses blown and it appears no other damage.

I had to leave it there and report what happened. We got the resistors on order but there clearly is some other issue.

I only had a chance to check for short around the resistor and nothing was shorted, I checked the adjacent transistors..

Any suggestions please?

MikePP you were right the amplifier was not even on! Orange was standby and as soon as I pressed CD, it went red and started the resistor smoked immediately..

I had the same problem. A tiny cap on the 18v PCB shorted and it was easy to overlook.
And the filter cap of the 7805 regulator was dry.
See also "hot-heatsinks-in-vintage-amps-such-as-nad-c320"

 

[dj_holmes]

I see. Well just wanted to close the thread with a happy ending! LOL