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Re: K100c-7 works intermittenly [message #24816 is a reply to message #24806]

Thu, 24 March 2016 17:47

chicagobill
Messages: 2005
Registered: April 2003

Senior Member

More clues, that helps. To me it sounds like it might be a preamp power supply problem. The power amp still thumps, neither channel passes signal and no reverb crash.

The low voltage power supplies are located on the power amp pc board. Check to see that you have + and - 8 volts dc coming out of the regulators. Try probing the board with the well known chopstick and see if you can make the problem return.

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[Message index]

		K100c-7 works intermittenly By: natedriver on Thu, 24 March 2016 12:10
		Re: K100c-7 works intermittenly By: Iowa Boy on Thu, 24 March 2016 12:53
		Re: K100c-7 works intermittenly By: stevem on Thu, 24 March 2016 12:57
		Re: K100c-7 works intermittenly By: chicagobill on Thu, 24 March 2016 13:41
		Re: K100c-7 works intermittenly By: natedriver on Thu, 24 March 2016 14:20
		Re: K100c-7 works intermittenly By: Shaun_Musings on Thu, 24 March 2016 18:01
		Re: K100c-7 works intermittenly By: chicagobill on Thu, 24 March 2016 17:47
		Re: K100c-7 works intermittenly By: Shaun_Musings on Thu, 24 March 2016 18:02
		Re: K100c-7 works intermittenly By: stevem on Fri, 25 March 2016 06:13
		Re: K100c-7 works intermittenly By: carlc on Fri, 25 March 2016 17:44
		Re: K100c-7 works intermittenly By: stevem on Sat, 26 March 2016 06:18

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