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kustom lead3 head [message #14243]

Tue, 31 August 2010 06:23

peterjeur
Messages: 11
Registered: August 2010
Location: rotterdam holland

Junior Member

Hi, I'm new at this forum........Since a few weeks I became owner of an old Kustom lead 3 head with a 4-12 speaker cabinet.
I got it for a bottle of red wine Razz

I was told the amp doesn't work anymore. Usually I do tube amps ( I own a VOX AC 50 '67 and a Fender Bassman '71)so I don't have any experience in transistor amps. When I switch on the amp I hear a deep pop in the speakers and its hums a bit. So the power amp must be working. Opening the amp learnd me that 1 of the two 200 ohms resistors in the power supply for the pre-amps was fried. After replacing I mearsure 12,5V + to ground and 13V - to ground.
Capacitors looks like new! Still I got no sound on de amp......
When I put a signal from an MP3 player on the power amp I get music out of the speakers but working my way up to the imputs in both pre-amps soon I get out of sound. The question is: can the fried resistor be the cause of the dead IC's on the pre amp boards? (both channels are dead) but the tremelo and reverb still work a little. Please anyone with suggestions: help!
By the way it is a later model Lead 3 with the main switch on the right below the master volume pot.

GREAT SITE!

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[Message index]

		kustom lead3 head By: peterjeur on Tue, 31 August 2010 06:23
		Re: kustom lead3 head By: stevem on Tue, 31 August 2010 14:11
		Re: kustom lead3 head By: pleat on Tue, 31 August 2010 17:11
		Re: kustom lead3 head By: peterjeur on Wed, 01 September 2010 06:18
		Re: kustom lead3 head By: stevem on Wed, 01 September 2010 09:22
		Re: kustom lead3 head By: peterjeur on Wed, 01 September 2010 10:09
		Re: kustom lead3 head By: chicagobill on Wed, 01 September 2010 12:33
		Re: kustom lead3 head By: peterjeur on Thu, 02 September 2010 02:57
		Re: kustom lead3 head By: stevem on Wed, 01 September 2010 09:25
		Re: kustom lead3 head By: stevem on Thu, 02 September 2010 09:34
		Re: kustom lead3 head By: chicagobill on Thu, 02 September 2010 12:46
		Re: kustom lead3 head By: stevem on Thu, 02 September 2010 16:32
		Re: kustom lead3 head By: peterjeur on Fri, 03 September 2010 08:26
		Re: kustom lead3 head By: stevem on Fri, 03 September 2010 09:32
		Re: kustom lead3 head By: peterjeur on Fri, 03 September 2010 09:48
		Re: kustom lead3 head By: stevem on Sat, 04 September 2010 09:42
		Re: kustom lead3 head By: peterjeur on Sat, 04 September 2010 10:04
		Re: kustom lead3 head By: peterjeur on Thu, 14 October 2010 04:04
		Re: kustom lead3 head By: stevem on Thu, 14 October 2010 12:07
		Re: kustom lead3 head By: peterjeur on Fri, 15 October 2010 04:16
		Re: kustom lead3 head By: stevem on Fri, 15 October 2010 07:42
		Re: kustom lead3 head By: peterjeur on Fri, 15 October 2010 08:30
		Re: kustom lead3 head By: stevem on Fri, 15 October 2010 10:10
		Re: kustom lead3 head By: peterjeur on Fri, 15 October 2010 10:29
		Re: kustom lead3 head By: stevem on Fri, 15 October 2010 12:11

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