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Forum: Repairing Kustom Amps
 Topic: K150-6 pumps out DC voltage when powered on.
Re: K150-6 pumps out DC voltage when powered on. [message #27669 is a reply to message #23707] Tue, 18 February 2020 06:08
stevem is currently offline  stevem
Messages: 4247
Registered: June 2004
Location: NY
Senior Member
Another thing to try is heat.

Take a hair dryer hold a plastic funnel over it and apply the heat to the heat sink area where the output Transistors and bias diode are until that area feels noticeably warm, but not burn your finger hot.

Next turn on the amp and see if it's already acting up, if not then move on to the circuit board, but if it foes act up then let it cool down and then before you play the amp again for 5 minutes pull that bias diode up out of its clip and see if the issue does not happen or is delayed a bunch.

Take great care pulling that diode up out of its clip because it's leads are very fragile!
Forum: Comment Board
 Topic: Mystery machine
Mystery machine [message #27670] Tue, 18 February 2020 11:24
Dumps is currently offline  Dumps
Messages: 1
Registered: February 2020
Junior Member
It says KBA100 but I cannot find a bass amp like this one anywhere. Trying to track down a schematic.
Does anyone have any information about when it was made or any identifying info?
It has an XLR input in the front and a single 15" (?) speaker.
This is my first time posting on a message board so please forgive me if I'm doin' it wrong!
It won't let me post photos for some reason.
Thank you!
Re: Mystery machine [message #27671 is a reply to message #27670] Tue, 18 February 2020 12:23
stevem is currently offline  stevem
Messages: 4247
Registered: June 2004
Location: NY
Senior Member
Hi!
That model Kustom is not what this site concider's a vintage model so you will not find a schematic for it here.
You need to contact the current owners of the Kustom name / brand to get your info.

That being said I may have a schematic and I will look for you tonight but once contacting Kustom they have always emailed me one same day.


What's the issue with the amp?

Yes, photos can not be loaded here.



Current Time: Tue Feb #d 21:33:25 EST 2020
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