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Re: K150-6 pumps out DC voltage when powered on. [message #23726 is a reply to message #23707]

Mon, 31 August 2015 06:38

stevem
Messages: 4775
Registered: June 2004
Location: NY

Senior Member

Take a good close look at the two rectangular 5 watt resistors mounted near each square metal heat sinked cased drive transistor on the output board.
You may need to unsolder one end to see the non lettered bottom, but if that bottom side shows any signs of cracking then replace it as it may be going intermitantly open on you.
If you replace any then steep up to a 7 watt version if you can.

Also note that the any other small metal cased transistor needs to be looked at close too, as back then there leads tended to snap off at the bottom of the transistor if the factory instlled them bent up.

[Updated on: Mon, 31 August 2015 06:39]

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		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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