VintageKustom.com: Repairing Kustom Amps

Home » VintageKustom.com » Repairing Kustom Amps » Kustom K250-1 help

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

Kustom K250-1 help [message #6653]

Sat, 18 February 2006 02:39

Lustalbert
Messages: 2
Registered: February 2006
Location: Columbus OH

Junior Member

Hello all.
I am curently attempting the repair of my K250 head. The amp did the big smoke show while it was on loan to a friend about 8 years ago, and I have been lax about fixing it untill the motivation finally struck me (wife said she is gona throw out the broken stuff I havent fixed).
I have the schematics for the amp, just need a cross referance for the part #s listed (Q1-Q13, CR1-CR6, ect) If you have a list and could type it up, I would appreciate it. I am also trying to have all the cross info handy if it should ever die again due to some other part.
Thanks
Andrew

[Updated on: Sat, 18 February 2006 02:39]

Report message to a moderator

Re: Kustom K250-1 help [message #6655 is a reply to message #6653]

Sat, 18 February 2006 20:40

Lustalbert
Messages: 2
Registered: February 2006
Location: Columbus OH

Junior Member

What luck, I found the old parts and was able to cross them (after cleaning off the carbon).
q1 - NTE159
q2 - "
q3 - NTE128
q4 - "
q5 - NTE129
q6 - NTE123A
q7 - NTE129
q8 - NTE128
q9 - NTE129
q10-q13 - NTE130

Got it put back together, and it kicks more ass than I remember.

BTW, something I did for the preamp drivers, not sure if anyone else has done this or not. I removed the OEM heatsinks from the original transistors, then took a dremel and enlarged the holes so they would fit over the replacement transistors (snug, but not requiring a hammer) then added a little heat sink compund to help make sure. Works great, and keeps am nice and cool.
Andrew

Report message to a moderator

Re: Kustom K250-1 help [message #6657 is a reply to message #6653]

Mon, 20 February 2006 08:37

stevem
Messages: 4886
Registered: June 2004
Location: NY

Senior Member

You might want to put a good blob of silicone glue on each side of the heat sink to the board on those TO5 case tranisitors. Those stock RCA heat sinks or pretty big and you do not want to put that much stress on the transistors leads, transportation vibration could snap them!

Report message to a moderator

Previous Topic:	JBL hiss
Next Topic:	KASINO CONCERT PA

Goto Forum:

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

]

Current Time: Fri Jul 17 19:22:23 EDT 2026