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Old 6th December 2017, 10:44 PM
Aro69 Aro69 is offline
Junior Member
Join Date: Oct 2017
Location: Portsmouth
Posts: 10
Default Re: Kit 34 tubes change bias

Hi Richard. The sound is like buzz with mili break every second. The buzz sometimes has gone like just now when I write this. It happens after several hours of listening. Changing selector doesn't change noise and volume level has no influence on it too. Any idea?
Thanks for help.

Originally Posted by Richard View Post
Hi Aro, yes as Bob says the input selector switch is the rotary one on the right;

Turn the amp on,

turn the volume up quite loud but with no music playing on any input,

then wobble the input switch around to see if it is making a noisy connection.

Change inputs and try them all.

What kind of noise is it; hum, crackle or rustling, whine, etc?
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