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dc voltage at the output [message #22351]

Wed, 04 February 2015 10:35

smackoj
Messages: 67
Registered: September 2013

Member

hi gents; I have a K200B4 that I have been running with the PC403 preamp board disconnected because it was inop when I got the amp. I took a look at it lately and found the transistors Q400 and 401 had been replaced by someone who did the job bass-ackwards. I replaced these two trans. with suitable replacements installed correctly and the channel is now working but there is a bad buzz in it. I measured the dc at the output and found .033 vdc there. Is that too much, not too much or ???

thanks, jack

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[Message index]

		dc voltage at the output By: smackoj on Wed, 04 February 2015 10:35
		Re: dc voltage at the output By: chicagobill on Wed, 04 February 2015 12:42
		Re: dc voltage at the output By: smackoj on Wed, 04 February 2015 13:41
		Re: dc voltage at the output By: chicagobill on Wed, 04 February 2015 15:06
		Re: dc voltage at the output By: smackoj on Wed, 04 February 2015 16:18
		Re: dc voltage at the output By: chicagobill on Wed, 04 February 2015 16:39
		Re: dc voltage at the output By: smackoj on Wed, 04 February 2015 17:47
		Re: dc voltage at the output By: smackoj on Wed, 04 February 2015 19:40
		Re: dc voltage at the output By: smackoj on Thu, 05 February 2015 09:49
		Re: dc voltage at the output By: stevem on Thu, 05 February 2015 11:10
		Re: dc voltage at the output By: chicagobill on Thu, 05 February 2015 12:32
		Re: dc voltage at the output By: smackoj on Thu, 05 February 2015 17:24
		Re: dc voltage at the output By: chicagobill on Thu, 05 February 2015 17:35
		Re: dc voltage at the output By: smackoj on Thu, 05 February 2015 17:57
		Re: dc voltage at the output By: pleat on Fri, 06 February 2015 19:27
		Re: dc voltage at the output By: chicagobill on Thu, 05 February 2015 23:52
		Re: dc voltage at the output By: stevem on Fri, 06 February 2015 06:18
		Re: dc voltage at the output By: smackoj on Fri, 06 February 2015 08:47
		Re: dc voltage at the output By: smackoj on Fri, 06 February 2015 10:08
		Re: dc voltage at the output By: chicagobill on Fri, 06 February 2015 12:49
		Re: dc voltage at the output By: smackoj on Fri, 06 February 2015 17:42
		Re: dc voltage at the output By: chicagobill on Sat, 07 February 2015 00:39
		Re: dc voltage at the output By: smackoj on Sat, 07 February 2015 04:52
		Re: dc voltage at the output By: stevem on Sat, 07 February 2015 07:39
		Re: dc voltage at the output By: smackoj on Sat, 07 February 2015 10:28
		Re: dc voltage at the output By: chicagobill on Sat, 07 February 2015 11:56
		Re: dc voltage at the output By: smackoj on Sat, 07 February 2015 12:57

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