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New guy-asking for your help! [message #6914] Mon, 17 April 2006 21:36 Go to next message
Swamp Gas is currently offline  Swamp Gas
Messages: 2
Registered: April 2006
Location: Slapout, Alabama
Junior Member
I know this forum is geared toward the tuck and roll set, but someone may be able to help me. I purchased a clean Kustom II bass head. It will not power up. I opened the case and discovered there is a fuse blown. The fuse is soldered on both ends into (is a part of) where the power comes into the amp. How do you go about changing the fuse? Are they still available? Is there another way to have a fuse link without soldering it in? Is this the way it came from the factory? Thanks in advance for your help!
Re: New guy-asking for your help! [message #6915 is a reply to message #6914] Tue, 18 April 2006 08:39 Go to previous messageGo to next message
stevem is currently offline  stevem
Messages: 4747
Registered: June 2004
Location: NY
Senior Member
Hi and welcome to our collective insanity.Unfortunatly if that fuse is blown the amp probibly has many parts that are bad in the driver and the output stage, and may be a blown rectifier bridge in the power supply, and sometimes a bad 14 pin IC chip on a preamp board depending if the power supply did have a problem or not. This amp is not hard to trouble shoot and get repaired by a tech and even if you had to replace all the semiconductors in the driver and output stage we are taking all of 35 dollars in parts. the fuse can be unsoldered and replaced with a reloadable clip togetheir type for easyer future replacement, but just replaceing it now will not get the head back up and running.Let us know how things go!
Re: New guy-asking for your help! [message #6919 is a reply to message #6914] Tue, 18 April 2006 12:41 Go to previous messageGo to next message
chicagobill
Messages: 2005
Registered: April 2003
Senior Member
Welcome to the board Swamp!
To directly answer your questions, yes that is the way the factory fused the amps. And yes, "pigtail" fuses are still available, but not very common.
As Steve noted, a fuse holder can be wired in place of the original fuse, or if your soldering skills are good, you can solder a new fuse in place.
Even though Steve is right about the shorted transistors, diodes, etc., sometimes a fuse will fail for unknown reasons. I would try replacing the fuse first, and if the new one blows, then it's time to troubleshoot the amp.
And because you're new around here, here's my standard warning about working on amps:
Working on any electronic device can be harmful to your health! Make sure the amp is unplugged before attempting repairs. Do not attempt to do anything that you are unsure of. Never work beyond your skill level.
Bill
Re: New guy-asking for your help! [message #6921 is a reply to message #6914] Tue, 18 April 2006 16:40 Go to previous messageGo to next message
Swamp Gas is currently offline  Swamp Gas
Messages: 2
Registered: April 2006
Location: Slapout, Alabama
Junior Member
Thanks for the replies! It won't be me that does any soldering on the amp. I am going to have to find someone that will work on it in my area. I was concerned that the amp may not be worth fixing. Does anyone on the board work on these?

[Updated on: Tue, 18 April 2006 18:03]

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Re: New guy-asking for your help! [message #6926 is a reply to message #6914] Wed, 19 April 2006 08:07 Go to previous message
stevem is currently offline  stevem
Messages: 4747
Registered: June 2004
Location: NY
Senior Member
Thank you bill, I forgot to mention that the fuse could have gone bad all on its own, but it is rare. What you can try would be to get a 1.5 amp non- slow blow fuse of any type, clip lead it in carefully and then plug the amp in/turn on and see if it flys. If you care to ship it all the way to N.Y state I can get it back up and running for you, or I would also guess that any major music store has a repair center or shop they use.
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