DId you switch tubes from one channel to the other to see if the problem changes channels? If you did and it stays in the same channel, it's probably not tubes. In that case I'd get in touch with David Berning or Allan Bhagan.
Berning ZH270 help
Hi folks,
I've a problem with my ZH270 that maybe someone else has got and solved.
My ZH270 since few days after 10 about minutes from turn on starts to rustle and croaking on the left channel, you can see the red led of bias to flick.
If I turn it off and then on again in short time (less than a minute). I got the big bump but then I can play for hours but no more noise comes up.
This is systematic. Any idea of what could be? Maybe something I can fix myself whitout send it to service.
Thanks for any helpful replays.
I've a problem with my ZH270 that maybe someone else has got and solved.
My ZH270 since few days after 10 about minutes from turn on starts to rustle and croaking on the left channel, you can see the red led of bias to flick.
If I turn it off and then on again in short time (less than a minute). I got the big bump but then I can play for hours but no more noise comes up.
This is systematic. Any idea of what could be? Maybe something I can fix myself whitout send it to service.
Thanks for any helpful replays.