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Part of my Kustom K 100C-8 blew [message #9838]

Sun, 02 November 2008 23:06

RickBlacker
Messages: 133
Registered: October 2008
Location: Oregon

Senior Member

So last night, I was plugged into my amp, I felt a little shock, next thing I knew, my amp stopped playing. Looking at the amp from the front, it's the right side that stopped working. However, if I plug into the left side, that still works.

Is there anything obvious that I can check?

Is it most likely that I'm going to have to take it into repair? And if so, does anyone know where in the Portland Oregon area?

My amp : K100C-8

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Re: Part of my Kustom K 100C-8 blew [message #9841 is a reply to message #9838]

Mon, 03 November 2008 06:46

stevem
Messages: 4733
Registered: June 2004
Location: NY

Senior Member

Hi, I have that same amp, and my left front channel blew on me once.
It looks like the channel you where playing thru blew also, and by the sound of it, it may have been a static discharge that did it even though these channels/preamps have a blocking cap feeding the first gain stage transistor that sound not let a that happen.
Anyway, yes you will have to take it to get repaired and its probibly only one transistor that is dead, but its a common cheap to buy transistor(like 10 cents from a supply house) and its not a hard circiut for a tech to work on.
While the guys in their have him clean and lube the pots and the short switches on all 4 input jacks.
Let use know how it goes.
I am a tech myself, but judeging by the jerks that work doing the electronic repair in some music shops by me I might suggest to you to take it to a local TV repair shop that might have a older fellow working their, as he could probibly get it back up and running in less than a hour!

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Re: Part of my Kustom K 100C-8 blew [message #9844 is a reply to message #9838]

Mon, 03 November 2008 11:19

RickBlacker
Messages: 133
Registered: October 2008
Location: Oregon

Senior Member

How much did it cost you to have it repaired? What about the plugin? Did you have him change it to a new style plugin that has at ground as well?

My amp : K100C-8

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Re: Part of my Kustom K 100C-8 blew [message #9845 is a reply to message #9838]

Mon, 03 November 2008 12:48

stevem
Messages: 4733
Registered: June 2004
Location: NY

Senior Member

I am a electronic tech, I do repairs myself, but as far as the cost for you where ever you take it, they should not charge you for more than 2 hours of labor + maybe 1.50 for the transistor.
Installing a grounded a/c cord should only add another 15 minutes of labor time as I just butt splice in the new cable, crimp a lug on the ground wire and then land that under the head of the screw that bolts down the rectifier bridge. NO soldering needed!

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Re: Part of my Kustom K 100C-8 blew [message #9864 is a reply to message #9838]

Wed, 05 November 2008 18:33

RickBlacker
Messages: 133
Registered: October 2008
Location: Oregon

Senior Member

Just out of curosity? Would you trust taking your amp to a local college that has an electonics and having college students work on it?

My amp : K100C-8

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Re: Part of my Kustom K 100C-8 blew [message #11817 is a reply to message #9841]

Sun, 13 September 2009 12:18

RickBlacker
Messages: 133
Registered: October 2008
Location: Oregon

Senior Member

Hi Steve...

Wow, I forgot about this post. Just happen to stumble across it while browsing this various pages.

I've decided to do the repairs myself. Is there any chance you might be able to assist me in this project and process? Also, can you recommned while I'm in there any other parts that i might want to change out? Any caps that might need to be replaced?

I'm probably not equiped for diagnostics, but, I can do part replacement.

My amp : K100C-8

[Updated on: Sun, 13 September 2009 12:19]

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