clicking noise after valve change

jasondunringill · Post by **jasondunringill** » Mon Sep 01, 2014 10:52 pm

Hi guys, gave a set of valves I'd briefly run in my dual terror (couple of hours max, no issues) to a friend for his Vox AC30, he's put them in but is apparently now getting a rhythmic clicking noise from the amp. I've not heard it myself, only going by a message he sent, any Ideas what the issue could be, the tubes have been safely stored since I took them out a few months ago, they should be ok so I said I would consult the experts!

Jondog · Post by **Jondog** » Mon Sep 01, 2014 11:01 pm

Is he wearing a watch

jasondunringill · Post by **jasondunringill** » Mon Sep 01, 2014 11:06 pm

Jondog wrote:Is he wearing a watch

Post by **bclaire** » Mon Sep 01, 2014 11:23 pm

In all seriousness, valves/ tubes don't click. Something external must be... like a watch.

jasondunringill · Post by **jasondunringill** » Mon Sep 01, 2014 11:45 pm

I'll get back to him and make sure he's not left his metronome on! He did seem sure it was something in the amp but he can be a numpty at times. Great musician though. . . .

Gladmarr · Post by **Gladmarr** » Tue Sep 02, 2014 1:37 am

I had a buddy who could never learn that the clicking noise in his amp was because he kept leaving his iphone on top of his amp. That will cause some super-weird clicking in tube amps.

davebolden44 · Post by **davebolden44** » Tue Sep 02, 2014 8:29 pm

parasitic oscillation can come from many different things in an amp.

MikeD · Post by **MikeD** » Tue Sep 02, 2014 8:47 pm

Gladmarr wrote:I had a buddy who could never learn that the clicking noise in his amp was because he kept leaving his iphone on top of his amp. That will cause some super-weird clicking in tube amps.

This is really good to know...next rehearsal its "screw with the guy that just bought a new vox"-day

jontheid · Post by **jontheid** » Tue Sep 02, 2014 9:18 pm

Failing valves can demonstrate rhythmic arcing that can sound like clicking though.
Sometimes when this is happening you can actually see the flashing in the valves coinciding with the clicking noises.

Post by **bclaire** » Wed Sep 03, 2014 1:16 am

jontheid wrote:Failing valves can demonstrate rhythmic arcing that can sound like clicking though.
Sometimes when this is happening you can actually see the flashing in the valves coinciding with the clicking noises.

OK I stand corrected!

clicking noise after valve change

clicking noise after valve change

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