VintageKustom.com: Repairing Kustom Amps

Home » VintageKustom.com » Repairing Kustom Amps » k200b-2 (popping and feedback problems.HELP! )

Show: Today's Messages :: Show Polls :: Message Navigator

k200b-2 [message #15441]

Tue, 22 March 2011 21:26

lewdog646
Messages: 4
Registered: March 2011
Location: ma

Junior Member

I'm currently trying to repair a k200b-2 head, When turning on the reverb or any switch for that matter it pops really loudly while pluged into the cab. The second thing is mass amounts of feedback coming through. I can't seem to figure out what the problem is. If anyone has an idea please i'm open to suggestion. please HELP!!!

[Updated on: Tue, 22 March 2011 21:27]

Report message to a moderator

Re: k200b-2 [message #15442 is a reply to message #15441]

Wed, 23 March 2011 12:21

chicagobill
Messages: 2005
Registered: April 2003

Senior Member

Welcome to the place lewdog.

The popping or scratching noise is usually a sign of dirty or oxidized pots. If you are handy you can open up the head and clean them with a can of DeOxit spray. I think that you can still get DeOxit at Radio Shack stores.

As for the feedback, do you mean feedback from your guitar or does the amp feedback all by itself?

Report message to a moderator

Re: k200b-2 [message #15443 is a reply to message #15441]

Wed, 23 March 2011 13:38

lewdog646
Messages: 4
Registered: March 2011
Location: ma

Junior Member

thanx i'll try your suggestion and it's feedback from the amp by itself.

Report message to a moderator

Re: k200b-2 [message #15444 is a reply to message #15441]

Wed, 23 March 2011 15:04

chicagobill
Messages: 2005
Registered: April 2003

Senior Member

If it is truly feedback, the only reason would be the reverb tank picking up the sound from the speaker cabinet. If you move the head around, away from the speakers will it stop?

Report message to a moderator

Re: k200b-2 [message #15445 is a reply to message #15444]

Wed, 23 March 2011 15:21

lewdog646
Messages: 4
Registered: March 2011
Location: ma

Junior Member

i actually have the reverb tank removed from the head to see if that was the problem, no change.and i'm still stumped.

Report message to a moderator

Re: k200b-2 [message #15446 is a reply to message #15441]

Wed, 23 March 2011 16:50

chicagobill
Messages: 2005
Registered: April 2003

Senior Member

Then I'd guess that it's not feedback, but an oscillation in the circuitry. I'd start by cleaning the pots and see if that helps.

Report message to a moderator

Re: k200b-2 [message #15447 is a reply to message #15446]

Wed, 23 March 2011 19:34

lewdog646
Messages: 4
Registered: March 2011
Location: ma

Junior Member

i tryed cleaning the pots with no change. i also found a jack in the circuit board that someone tried to solder back together and failed. so i'll replace it and see if that helps.

Report message to a moderator

Previous Topic:	K200B-1
Next Topic:	K 100-1

Goto Forum:

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Sun Apr #d 09:25:39 EDT 2024

.:: Contact :: Home ::.