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Re: Receiving a Kustom K250 amp head [message #21887 is a reply to message #21886]

Tue, 25 November 2014 08:54

Kd5uwl is currently offline

Kd5uwl
Messages: 25
Registered: November 2014

Junior Member

Thank you! I will check that out. It's difficult to solder the three conductor input wire back on to the board because the wire is so short but I'll do it because it will be much easier and smarter than blindly changing the IC.

Last night I totally got the channel labeled "2" working full tilt. No more fade out of the bass after running for a couple of minutes. I played it for a long time and it just sounds fantastic. You guys were right: I found one capacitor completely popped loose on one end and barely hanging by the other .. and in fact it fell completely out by the time I got the board out. And I found another cap with a cold solder joint on one end .. visibly cold.

Before putting that board back in I completely cleaned the amp inside and out. Now it looks like a new amp inside! If I figure out how to post pictures I'll share some photos.

I don't see any issues with any of the Molex connectors but I definitely had trouble with those capacitors, so if problems with board "2" can affect board "1" then I will definitely solder board "1" back in and try it again before blindly replacing that IC.

Thank you all for helping me fix this amp! Again, I've never had one of these and I'm in love with the tone. If I get board "1" working I will:

- replace the 2-prong cord with a 20' 3-prong cord.
- probably install a panel mount fuse holder on back. There is currently an inline fuseholder inside and it's installed in such a way that it's hard to believe it's original.
- find out about the two front panel switches .. are they supposed to light up? Mine don't. This should be visible on the schematic .. I'll check that as soon as I send this post.

Thanks again for helping me!

--kd5uwl

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[Message index]

		Receiving a Kustom K250 amp head By: Kd5uwl on Thu, 06 November 2014 15:49
		Re: Receiving a Kustom K250 amp head By: chicagobill on Thu, 06 November 2014 17:09
		Re: Receiving a Kustom K250 amp head By: Kd5uwl on Thu, 06 November 2014 18:10
		Re: Receiving a Kustom K250 amp head By: stevem on Fri, 07 November 2014 06:13
		Re: Receiving a Kustom K250 amp head By: Kd5uwl on Mon, 24 November 2014 09:06
		Re: Receiving a Kustom K250 amp head By: stevem on Mon, 24 November 2014 09:13
		Re: Receiving a Kustom K250 amp head By: Kd5uwl on Mon, 24 November 2014 09:31
		Re: Receiving a Kustom K250 amp head By: stevem on Mon, 24 November 2014 10:47
		Re: Receiving a Kustom K250 amp head By: chicagobill on Mon, 24 November 2014 12:47
		Re: Receiving a Kustom K250 amp head By: Kd5uwl on Mon, 24 November 2014 13:11
		Re: Receiving a Kustom K250 amp head By: chicagobill on Mon, 24 November 2014 14:39
		Re: Receiving a Kustom K250 amp head By: stevem on Tue, 25 November 2014 06:24
		Re: Receiving a Kustom K250 amp head By: Kd5uwl on Tue, 25 November 2014 08:54
		Re: Receiving a Kustom K250 amp head By: chicagobill on Tue, 25 November 2014 19:30
		Re: Receiving a Kustom K250 amp head By: Kd5uwl on Tue, 25 November 2014 20:59
		Re: Receiving a Kustom K250 amp head By: stevem on Tue, 25 November 2014 10:24
		Re: Receiving a Kustom K250 amp head By: stevem on Wed, 26 November 2014 06:14
		Re: Receiving a Kustom K250 amp head By: Kd5uwl on Wed, 26 November 2014 07:13
		Re: Receiving a Kustom K250 amp head By: Kd5uwl on Wed, 26 November 2014 08:15
		Re: Receiving a Kustom K250 amp head By: stevem on Thu, 27 November 2014 07:41
		Re: Receiving a Kustom K250 amp head By: Kd5uwl on Tue, 02 December 2014 11:14
		Re: Receiving a Kustom K250 amp head By: chicagobill on Tue, 02 December 2014 12:22
		Re: Receiving a Kustom K250 amp head By: Kd5uwl on Wed, 03 December 2014 11:17
		Re: Receiving a Kustom K250 amp head By: chicagobill on Wed, 03 December 2014 11:24
		Re: Receiving a Kustom K250 amp head By: pleat on Wed, 03 December 2014 21:20
		Re: Receiving a Kustom K250 amp head By: stevem on Thu, 04 December 2014 06:33
		Re: Receiving a Kustom K250 amp head By: Kd5uwl on Thu, 04 December 2014 16:31
		Re: Receiving a Kustom K250 amp head By: Kd5uwl on Thu, 04 December 2014 16:33
		Re: Receiving a Kustom K250 amp head By: pleat on Thu, 04 December 2014 16:55
		Re: Receiving a Kustom K250 amp head By: stevem on Fri, 05 December 2014 06:40
		Re: Receiving a Kustom K250 amp head By: C4ster on Fri, 05 December 2014 08:52
		Re: Receiving a Kustom K250 amp head By: Kd5uwl on Fri, 05 December 2014 14:01
		Re: Receiving a Kustom K250 amp head By: pleat on Fri, 05 December 2014 15:04
		Re: Receiving a Kustom K250 amp head By: Kd5uwl on Fri, 05 December 2014 15:05
		Re: Receiving a Kustom K250 amp head By: Kd5uwl on Fri, 05 December 2014 15:07
		Re: Receiving a Kustom K250 amp head By: C4ster on Fri, 05 December 2014 16:00
		Re: Receiving a Kustom K250 amp head By: Kd5uwl on Wed, 17 December 2014 20:16
		Re: Receiving a Kustom K250 amp head By: pleat on Wed, 17 December 2014 20:52
		Re: Receiving a Kustom K250 amp head By: Kd5uwl on Wed, 17 December 2014 21:05
		Re: Receiving a Kustom K250 amp head By: stevem on Thu, 18 December 2014 06:09
		Re: Receiving a Kustom K250 amp head By: Kd5uwl on Fri, 26 December 2014 13:48
		Re: Receiving a Kustom K250 amp head By: Kd5uwl on Fri, 26 December 2014 19:57
		Re: Receiving a Kustom K250 amp head By: Kd5uwl on Fri, 26 December 2014 19:59
		Re: Receiving a Kustom K250 amp head By: Kd5uwl on Sat, 27 December 2014 22:20
		Re: Receiving a Kustom K250 amp head By: chicagobill on Sun, 28 December 2014 02:28
		Re: Receiving a Kustom K250 amp head By: Kd5uwl on Sun, 28 December 2014 09:45
		Re: Receiving a Kustom K250 amp head By: Kd5uwl on Mon, 29 December 2014 18:36
		Re: Receiving a Kustom K250 amp head By: chicagobill on Wed, 31 December 2014 02:11
		Re: Receiving a Kustom K250 amp head By: stevem on Wed, 31 December 2014 06:12
		Re: Receiving a Kustom K250 amp head By: Kd5uwl on Thu, 22 January 2015 16:19

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