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Re: Kustom III PA [message #22769 is a reply to message #22767]

Sun, 19 April 2015 06:55

stevem
Messages: 4778
Registered: June 2004
Location: NY

Senior Member

The paIII uses a output stage who's schematic can be found in this sites techical section, it a PC 5029 board schematic and like Bill posted check those 3 diodes and in peticular check CR3 as that is the diode that is suppose to be clipped in tight in the center of the output transistor heat sink.
Make sure this diode is clipped in tight and that it leads although insulateded do not touch that metal clip it resides in!
It's normal for the bottom of the amp to feel warm after it's been on for a hour or so in this area, but not hot if the amp has only been idling!

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[Message index]

		Kustom III PA By: Autoharp on Sun, 19 April 2015 00:02
		Re: Kustom III PA By: chicagobill on Sun, 19 April 2015 02:48
		Re: Kustom III PA By: stevem on Sun, 19 April 2015 06:55
		Re: Kustom III PA By: Autoharp on Tue, 21 April 2015 09:20
		Re: Kustom III PA By: Autoharp on Mon, 20 April 2015 12:10
		Re: Kustom III PA By: stevem on Mon, 20 April 2015 12:41
		Re: Kustom III PA By: Autoharp on Tue, 21 April 2015 09:10
		Re: Kustom III PA By: chicagobill on Tue, 21 April 2015 11:24
		Re: Kustom III PA By: stevem on Tue, 21 April 2015 13:05
		Re: Kustom III PA By: Autoharp on Tue, 21 April 2015 14:03
		Re: Kustom III PA By: chicagobill on Tue, 21 April 2015 14:11
		Re: Kustom III PA By: Autoharp on Tue, 21 April 2015 22:42
		Re: Kustom III PA By: Autoharp on Wed, 22 April 2015 09:37
		Re: Kustom III PA By: chicagobill on Wed, 22 April 2015 13:22
		Re: Kustom III PA By: Autoharp on Wed, 22 April 2015 16:11
		Re: Kustom III PA By: chicagobill on Wed, 22 April 2015 17:29
		Re: Kustom III PA By: Autoharp on Thu, 23 April 2015 15:05
		Re: Kustom III PA By: chicagobill on Thu, 23 April 2015 15:32
		Re: Kustom III PA By: Autoharp on Thu, 23 April 2015 22:27
		Re: Kustom III PA By: chicagobill on Fri, 24 April 2015 01:10
		Re: Kustom III PA By: stevem on Fri, 24 April 2015 06:18
		Re: Kustom III PA By: Autoharp on Fri, 24 April 2015 16:54
		Re: Kustom III PA By: stevem on Sat, 25 April 2015 06:54
		Re: Kustom III PA By: Autoharp on Sun, 14 June 2015 21:05
		Re: Kustom III PA By: Autoharp on Sun, 14 June 2015 23:54
		Re: Kustom III PA By: stevem on Mon, 15 June 2015 06:26
		Re: Kustom III PA By: Autoharp on Wed, 17 June 2015 02:16
		Re: Kustom III PA By: stevem on Wed, 17 June 2015 06:17

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