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Re: Schematic Accuracy [message #20176 is a reply to message #20097]

Tue, 18 February 2014 12:24

chicagobill
Messages: 2005
Registered: April 2003

Senior Member

Glad to hear that it's back to working again. As we were discussing before, the thumping could be caused by transfer from wiring or through the power supply lines.

If you have an oscilloscope, try viewing the 8 volt dc supply lines around Q110 to Q112 to see if there is any ticking being induced into the power supply.

Earlier you stated that a lot of the resistors were changed in this amp. Were the 1% resistors like R156-R159 changed? If they were what were they replaced with?

Were caps C133 and C134 replaced in the 8 volt power supplies? And if they were what were they replaced with?

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[Message index]

		Schematic Accuracy By: bluezebra on Mon, 10 February 2014 01:29
		Re: Schematic Accuracy By: stevem on Mon, 10 February 2014 06:30
		Re: Schematic Accuracy By: bluezebra on Mon, 10 February 2014 10:19
		Re: Schematic Accuracy By: bluezebra on Mon, 10 February 2014 10:26
		Re: Schematic Accuracy By: chicagobill on Mon, 10 February 2014 12:40
		Re: Schematic Accuracy By: bluezebra on Mon, 10 February 2014 13:00
		Re: Schematic Accuracy By: stevem on Mon, 10 February 2014 13:17
		Re: Schematic Accuracy By: bluezebra on Mon, 10 February 2014 13:41
		Re: Schematic Accuracy By: chicagobill on Mon, 10 February 2014 16:24
		Re: Schematic Accuracy By: bluezebra on Mon, 10 February 2014 17:10
		Re: Schematic Accuracy By: bluezebra on Mon, 10 February 2014 17:33
		Re: Schematic Accuracy By: chicagobill on Tue, 11 February 2014 12:22
		Re: Schematic Accuracy By: bluezebra on Tue, 11 February 2014 13:25
		Re: Schematic Accuracy By: stevem on Wed, 12 February 2014 09:26
		Re: Schematic Accuracy By: bluezebra on Wed, 12 February 2014 12:55
		Re: Schematic Accuracy By: stevem on Wed, 12 February 2014 17:08
		Re: Schematic Accuracy By: bluezebra on Wed, 12 February 2014 17:20
		Re: Schematic Accuracy By: bluezebra on Wed, 12 February 2014 21:22
		Re: Schematic Accuracy By: chicagobill on Thu, 13 February 2014 10:43
		Re: Schematic Accuracy By: bluezebra on Thu, 13 February 2014 13:57
		Re: Schematic Accuracy By: chicagobill on Thu, 13 February 2014 14:40
		Re: Schematic Accuracy By: bluezebra on Thu, 13 February 2014 15:20
		Re: Schematic Accuracy By: bluezebra on Thu, 13 February 2014 15:25
		Re: Schematic Accuracy By: chicagobill on Thu, 13 February 2014 16:14
		Re: Schematic Accuracy By: bluezebra on Thu, 13 February 2014 17:39
		Re: Schematic Accuracy By: bluezebra on Thu, 13 February 2014 19:36
		Re: Schematic Accuracy By: bluezebra on Thu, 13 February 2014 22:03
		Re: Schematic Accuracy By: bluezebra on Thu, 13 February 2014 22:40
		Re: Schematic Accuracy By: chicagobill on Fri, 14 February 2014 13:04
		Re: Schematic Accuracy By: bluezebra on Fri, 14 February 2014 22:38
		Re: Schematic Accuracy By: stevem on Sat, 15 February 2014 07:43
		Re: Schematic Accuracy By: bluezebra on Sat, 15 February 2014 10:28
		Re: Schematic Accuracy By: bluezebra on Sat, 15 February 2014 12:11
		Re: Schematic Accuracy By: stevem on Mon, 17 February 2014 06:33
		Re: Schematic Accuracy By: bluezebra on Mon, 17 February 2014 11:07
		Re: Schematic Accuracy By: bluezebra on Mon, 17 February 2014 11:33
		Re: Schematic Accuracy By: chicagobill on Mon, 17 February 2014 13:25
		Re: Schematic Accuracy By: bluezebra on Mon, 17 February 2014 14:20
		Re: Schematic Accuracy By: chicagobill on Mon, 17 February 2014 14:54
		Re: Schematic Accuracy By: bluezebra on Mon, 17 February 2014 16:56
		Re: Schematic Accuracy By: bluezebra on Mon, 17 February 2014 17:14
		Re: Schematic Accuracy By: bluezebra on Mon, 17 February 2014 17:36
		Re: Schematic Accuracy By: chicagobill on Tue, 18 February 2014 12:24
		Re: Schematic Accuracy By: bluezebra on Tue, 18 February 2014 13:31
		Re: Schematic Accuracy By: bluezebra on Tue, 18 February 2014 13:37
		Re: Schematic Accuracy By: chicagobill on Tue, 18 February 2014 13:58
		Re: Schematic Accuracy By: bluezebra on Tue, 18 February 2014 18:25
		Re: Schematic Accuracy By: bluezebra on Tue, 18 February 2014 20:53
		Re: Schematic Accuracy By: chicagobill on Tue, 18 February 2014 21:38
		Re: Schematic Accuracy By: bluezebra on Tue, 18 February 2014 23:15
		Re: Schematic Accuracy By: bluezebra on Tue, 18 February 2014 23:17
		Re: Schematic Accuracy By: chicagobill on Wed, 19 February 2014 01:44
		Re: Schematic Accuracy By: bluezebra on Wed, 19 February 2014 10:32
		Re: Schematic Accuracy By: chicagobill on Wed, 19 February 2014 11:13
		Re: Schematic Accuracy By: bluezebra on Wed, 19 February 2014 12:21
		Re: Schematic Accuracy By: chicagobill on Wed, 19 February 2014 13:20
		Re: Schematic Accuracy By: bluezebra on Wed, 19 February 2014 14:02
		Re: Schematic Accuracy By: bluezebra on Wed, 19 February 2014 14:05
		Re: Schematic Accuracy By: chicagobill on Wed, 19 February 2014 17:06
		Re: Schematic Accuracy By: bluezebra on Wed, 19 February 2014 23:21
		Re: Schematic Accuracy By: stevem on Thu, 20 February 2014 06:49
		Re: Schematic Accuracy By: bluezebra on Thu, 20 February 2014 12:03

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