Amp making phase shifter noise

Matt dc10 · 26th February 2012, 05:19 PM

I have a Mesa dc10 that in the last two days has started making a phase shifting noise. I have only noticed it in the overdrive channel. The noise comes and goes at random. Any ideas as to what is causing this?

razorrick1293 · 26th February 2012, 06:08 PM

i would guess RF interfiernce and/or oscilation in the amp. its possible that a filter cap has gone bad, but first thing to do is try a tube swap and re bias.

26th February 2012, 05:19 PM	#1
Matt dc10 diyAudio Member Join Date: Feb 2012	Amp making phase shifter noise I have a Mesa dc10 that in the last two days has started making a phase shifting noise. I have only noticed it in the overdrive channel. The noise comes and goes at random. Any ideas as to what is causing this?

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26th February 2012, 06:08 PM	#2
razorrick1293 diyAudio Member Join Date: Nov 2010 Location: England Hertfordshire	i would guess RF interfiernce and/or oscilation in the amp. its possible that a filter cap has gone bad, but first thing to do is try a tube swap and re bias.