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Re: K150-6 pumps out DC voltage when powered on. [message #27732 is a reply to message #23707]

Sat, 14 March 2020 21:58

chicagobill
Messages: 2006
Registered: April 2003

Senior Member

Yes, there is a way to reuse the heatsinks, but it is not a simple job.

For testing, you don't need to have the heatsinks on the replacement transistors. The amp will need the heatsinks if you drive the amp hard and for an extended period of time.

Did you try testing Q4 or removing C7?

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[Message index]

		K150-6 pumps out DC voltage when powered on. By: corybrown on Mon, 24 August 2015 14:21
		Re: K150-6 pumps out DC voltage when powered on. By: pleat on Mon, 24 August 2015 15:02
		Re: K150-6 pumps out DC voltage when powered on. By: corybrown on Mon, 24 August 2015 15:06
		Re: K150-6 pumps out DC voltage when powered on. By: chicagobill on Mon, 24 August 2015 17:07
		Re: K150-6 pumps out DC voltage when powered on. By: stevem on Tue, 25 August 2015 06:27
		Re: K150-6 pumps out DC voltage when powered on. By: corybrown on Sun, 30 August 2015 13:42
		Re: K150-6 pumps out DC voltage when powered on. By: chicagobill on Sun, 30 August 2015 14:12
		Re: K150-6 pumps out DC voltage when powered on. By: stevem on Mon, 31 August 2015 06:38
		Re: K150-6 pumps out DC voltage when powered on. By: corybrown on Tue, 11 February 2020 19:13
		Re: K150-6 pumps out DC voltage when powered on. By: chicagobill on Wed, 12 February 2020 14:52
		Re: K150-6 pumps out DC voltage when powered on. By: corybrown on Wed, 12 February 2020 17:32
		Re: K150-6 pumps out DC voltage when powered on. By: corybrown on Wed, 12 February 2020 22:54
		Re: K150-6 pumps out DC voltage when powered on. By: stevem on Thu, 13 February 2020 06:40
		Re: K150-6 pumps out DC voltage when powered on. By: corybrown on Thu, 13 February 2020 18:25
		Re: K150-6 pumps out DC voltage when powered on. By: corybrown on Thu, 13 February 2020 20:11
		Re: K150-6 pumps out DC voltage when powered on. By: stevem on Fri, 14 February 2020 06:44
		Re: K150-6 pumps out DC voltage when powered on. By: corybrown on Sun, 16 February 2020 23:04
		Re: K150-6 pumps out DC voltage when powered on. By: chicagobill on Mon, 17 February 2020 12:38
		Re: K150-6 pumps out DC voltage when powered on. By: stevem on Tue, 18 February 2020 06:08
		Re: K150-6 pumps out DC voltage when powered on. By: corybrown on Thu, 20 February 2020 21:16
		Re: K150-6 pumps out DC voltage when powered on. By: stevem on Fri, 21 February 2020 06:18
		Re: K150-6 pumps out DC voltage when powered on. By: corybrown on Fri, 21 February 2020 21:20
		Re: K150-6 pumps out DC voltage when powered on. By: stevem on Sat, 22 February 2020 06:28
		Re: K150-6 pumps out DC voltage when powered on. By: corybrown on Sat, 22 February 2020 11:20
		Re: K150-6 pumps out DC voltage when powered on. By: stevem on Sun, 23 February 2020 06:30
		Re: K150-6 pumps out DC voltage when powered on. By: corybrown on Mon, 24 February 2020 19:58
		Re: K150-6 pumps out DC voltage when powered on. By: stevem on Tue, 25 February 2020 07:20
		Re: K150-6 pumps out DC voltage when powered on. By: corybrown on Tue, 25 February 2020 09:47
		Re: K150-6 pumps out DC voltage when powered on. By: stevem on Tue, 25 February 2020 12:17
		Re: K150-6 pumps out DC voltage when powered on. By: corybrown on Thu, 27 February 2020 21:28
		Re: K150-6 pumps out DC voltage when powered on. By: chicagobill on Sun, 01 March 2020 01:03
		Re: K150-6 pumps out DC voltage when powered on. By: corybrown on Sun, 01 March 2020 11:45
		Re: K150-6 pumps out DC voltage when powered on. By: chicagobill on Sun, 01 March 2020 16:15
		Re: K150-6 pumps out DC voltage when powered on. By: corybrown on Mon, 02 March 2020 12:51
		Re: K150-6 pumps out DC voltage when powered on. By: corybrown on Mon, 02 March 2020 20:55
		Re: K150-6 pumps out DC voltage when powered on. By: corybrown on Mon, 02 March 2020 22:07
		Re: K150-6 pumps out DC voltage when powered on. By: stevem on Tue, 03 March 2020 06:06
		Re: K150-6 pumps out DC voltage when powered on. By: corybrown on Tue, 03 March 2020 07:16
		Re: K150-6 pumps out DC voltage when powered on. By: stevem on Tue, 03 March 2020 07:42
		Re: K150-6 pumps out DC voltage when powered on. By: corybrown on Tue, 03 March 2020 09:13
		Re: K150-6 pumps out DC voltage when powered on. By: corybrown on Fri, 06 March 2020 18:59
		Re: K150-6 pumps out DC voltage when powered on. By: stevem on Sat, 07 March 2020 06:18
		Re: K150-6 pumps out DC voltage when powered on. By: corybrown on Sat, 07 March 2020 21:25
		Re: K150-6 pumps out DC voltage when powered on. By: chicagobill on Sun, 08 March 2020 00:09
		Re: K150-6 pumps out DC voltage when powered on. By: corybrown on Sun, 08 March 2020 16:28
		Re: K150-6 pumps out DC voltage when powered on. By: chicagobill on Sun, 08 March 2020 19:43
		Re: K150-6 pumps out DC voltage when powered on. By: corybrown on Sun, 08 March 2020 21:41
		Re: K150-6 pumps out DC voltage when powered on. By: corybrown on Sun, 08 March 2020 21:56
		Re: K150-6 pumps out DC voltage when powered on. By: stevem on Mon, 09 March 2020 05:55
		Re: K150-6 pumps out DC voltage when powered on. By: corybrown on Mon, 09 March 2020 08:38
		Re: K150-6 pumps out DC voltage when powered on. By: corybrown on Mon, 09 March 2020 11:59
		Re: K150-6 pumps out DC voltage when powered on. By: chicagobill on Mon, 09 March 2020 12:54
		Re: K150-6 pumps out DC voltage when powered on. By: corybrown on Sat, 14 March 2020 17:40
		Re: K150-6 pumps out DC voltage when powered on. By: chicagobill on Sat, 14 March 2020 21:58
		Re: K150-6 pumps out DC voltage when powered on. By: corybrown on Sun, 15 March 2020 10:51
		Re: K150-6 pumps out DC voltage when powered on. By: chicagobill on Sun, 15 March 2020 13:55
		Re: K150-6 pumps out DC voltage when powered on. By: corybrown on Sun, 15 March 2020 19:05
		Re: K150-6 pumps out DC voltage when powered on. By: stevem on Mon, 16 March 2020 06:06
		Re: K150-6 pumps out DC voltage when powered on. By: corybrown on Mon, 16 March 2020 18:56
		Re: K150-6 pumps out DC voltage when powered on. By: chicagobill on Mon, 16 March 2020 16:10
		Re: K150-6 pumps out DC voltage when powered on. By: stevem on Tue, 17 March 2020 07:46
		Re: K150-6 pumps out DC voltage when powered on. By: corybrown on Sat, 21 March 2020 11:34
		Re: K150-6 pumps out DC voltage when powered on. By: corybrown on Sat, 21 March 2020 11:57
		Re: K150-6 pumps out DC voltage when powered on. By: stevem on Sat, 21 March 2020 12:26
		Re: K150-6 pumps out DC voltage when powered on. By: chicagobill on Sat, 21 March 2020 15:10
		Re: K150-6 pumps out DC voltage when powered on. By: corybrown on Sat, 21 March 2020 15:26
		Re: K150-6 pumps out DC voltage when powered on. By: corybrown on Sat, 21 March 2020 16:42
		Re: K150-6 pumps out DC voltage when powered on. By: chicagobill on Sat, 21 March 2020 20:10
		Re: K150-6 pumps out DC voltage when powered on. By: corybrown on Sun, 22 March 2020 12:24
		Re: K150-6 pumps out DC voltage when powered on. By: stevem on Mon, 23 March 2020 06:06
		Re: K150-6 pumps out DC voltage when powered on. By: stevem on Thu, 26 March 2020 06:59
		Re: K150-6 pumps out DC voltage when powered on. By: corybrown on Fri, 27 March 2020 21:12

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