afterimage Posted March 7, 2014 Share Posted March 7, 2014 a mate of mine valve amp is making a blip blip blip noise through his speakers tried i with with no guitar plugged in it , it still does the same thing power off for 40 mins it goes off i lent him a shielded hi fi mains cable to try out but did not solve it any ideas what it is ? thanks Quote Link to comment Share on other sites More sharing options...
JPJ Posted March 7, 2014 Share Posted March 7, 2014 Sounds like a capacitor on its last legs? Quote Link to comment Share on other sites More sharing options...
MoonBassAlpha Posted March 7, 2014 Share Posted March 7, 2014 Motorboating? Quote Link to comment Share on other sites More sharing options...
waldflote8 Posted March 10, 2014 Share Posted March 10, 2014 I had a problem on a pair of Peavey Windsors,.. sort of irregular crackle/pop,.. small,. not like plugging/unplugging a guitar/bass with the amp volume up. It turned out to be the bias circuit, replaced the pot in each of them and fixed the problem. I had to track it with a scope, but when I narrowed it down to the bias circuit I was able to make it do the noise when pushing on the pot with an insulated chopstick. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.