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Blown 250 Bass Amp [message #11409]

Sat, 11 July 2009 10:56

John Hylton
Messages: 18
Registered: July 2009
Location: Salem, Oregon

Junior Member

I took my K250 - 1981 model - out of 4 or 5 year resting mode and was going to use it for a county fair gig. Turned it on at home and ran a few bass scales - worked fine - including the infamous Kustom hiss. Went to band job, setup with a DI box to run with house sound system, about 2 minutes into opening number, amp went dead and smoke poured out of the head. Opened up the amp head when I got home. There is a PC board mounted to the bottom of the amp, and has red and black wires feeding it from two large (what I think) are capacitors. This board has several transistor or resistors that are burned or burst open. From reading posts on this forum, it sounds like some of you are electronic experts and know how to repair these wonderful amps. Is there someone who works on these for a living or for hire? I really want this baby fixed if at all possible - I have owned it for 25 years and it is in almost brand new condition. To me, it's worth spending some $$ to get it going again. I might also mention, the lower channel..not the selectone one...has had almost no output for several years...you have to turn it almost full open to get any sound out of it...Just the top channel was fully functional.

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[Message index]

		Blown 250 Bass Amp By: John Hylton on Sat, 11 July 2009 10:56
		Re: Blown 250 Bass Amp By: pleat on Sat, 11 July 2009 15:27
		Re: Blown 250 Bass Amp By: stevem on Mon, 13 July 2009 06:18
		Re: Blown 250 Bass Amp By: John Hylton on Mon, 13 July 2009 09:54
		Re: Blown 250 Bass Amp By: chicagobill on Mon, 13 July 2009 12:09
		Re: Blown 250 Bass Amp By: John Hylton on Mon, 13 July 2009 22:28
		Re: Blown 250 Bass Amp By: stevem on Mon, 13 July 2009 12:21
		Re: Blown 250 Bass Amp By: stevem on Tue, 14 July 2009 05:52
		Re: Blown 250 Bass Amp By: LesS on Tue, 14 July 2009 08:08
		Re: Blown 250 Bass Amp By: John Hylton on Tue, 14 July 2009 09:53
		Re: Blown 250 Bass Amp By: stevem on Tue, 14 July 2009 12:12
		Re: Blown 250 Bass Amp By: BC on Tue, 14 July 2009 17:46
		Re: Blown 250 Bass Amp By: pleat on Tue, 14 July 2009 21:54
		Re: Blown 250 Bass Amp By: BC on Tue, 14 July 2009 23:08
		Re: Blown 250 Bass Amp By: John Hylton on Fri, 17 July 2009 22:58
		Re: Blown 250 Bass Amp By: chicagobill on Sat, 18 July 2009 12:52
		Re: Blown 250 Bass Amp By: John Hylton on Thu, 04 March 2010 00:41
		Re: Blown 250 Bass Amp By: stevem on Thu, 04 March 2010 06:20
		Re: Blown 250 Bass Amp By: John Hylton on Thu, 04 March 2010 09:54
		Re: Blown 250 Bass Amp By: stevem on Thu, 04 March 2010 12:14
		Re: Blown 250 Bass Amp By: John Hylton on Thu, 04 March 2010 15:37

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