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K200B [message #26029]

Wed, 05 April 2017 08:18

stevem
Messages: 4748
Registered: June 2004
Location: NY

Senior Member

Irish77960 had contacted me by pm about a issue with his amp.
He had installed a brite switch in one of the preamp boards that I provided him and things where fine.
While playing the amp he turned it up louder , played more and then heard a loud pop and lost output, but the strange thing is that the pilot lamp was still responding normal to his playing by dimming which is something I have never seen before!

So far in trouble shooting this issue I had him check the output from the amps RCA jack where he said that there is a screaming loud sound coming out if the jack.

My guess at this point is that one of the preamps is oscillating.

Irish77960 , at this point we neeed to pin down what's going on , and I would say that the thing to do is to unhook the Blue audio output wire from each preamp one at a time to see if atleast one channel is working normal and report back.

[Updated on: Wed, 05 April 2017 08:20]

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[Message index]

		K200B By: stevem on Wed, 05 April 2017 08:18
		Re: K200B By: irish77060 on Mon, 10 April 2017 17:06
		Re: K200B By: stevem on Tue, 11 April 2017 06:03
		Re: K200B By: irish77060 on Wed, 12 April 2017 11:02
		Re: K200B By: stevem on Wed, 12 April 2017 12:27
		Re: K200B By: irish77060 on Wed, 12 April 2017 15:52
		Re: K200B By: irish77060 on Wed, 12 April 2017 21:00
		Re: K200B By: stevem on Thu, 13 April 2017 06:11
		Re: K200B By: irish77060 on Thu, 13 April 2017 14:31

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