Marshall treble pot

General discussion area for tube amps.

Moderators: pompeiisneaks, Colossal

Post Reply
User avatar
Buschman
Posts: 419
Joined: Sat Nov 12, 2005 5:12 pm
Location: Beaumont Texas
Contact:
Contact Buschman

Marshall treble pot

Post by Buschman »

Just scored a 1978 Mk2 100 watt. The treble pot is bad. Any idea where i can get an exact or vintage replacement. I hate it when deoxit doesnt work :cry:
I've got blisters on my fingers!
Top
User avatar
Structo
Posts: 15446
Joined: Wed Oct 17, 2007 1:01 am
Location: Oregon

Re: Marshall treble pot

Post by Structo »

Which series amp is it? JCM JMP?
Tom

Don't let that smoke out!
Top
User avatar
Buschman
Posts: 419
Joined: Sat Nov 12, 2005 5:12 pm
Location: Beaumont Texas
Contact:
Contact Buschman

Re: Marshall treble pot

Post by Buschman »

It is a JMP. I am 51 years old, played 42 years, never had a 100 watt Marshall. Geeze. Nothing quite like banging out Dirty White Boy or smoke on the Water while sh** falls off the wall and shelves. :D I am having fun.
I've got blisters on my fingers!
Top
austinb
Posts: 52
Joined: Wed Apr 09, 2008 5:23 pm
Location: Huntsville, Alabama

Re: Marshall treble pot

Post by austinb »

Are you sure the pot is bad? You could have a leaky coupling cap in the treble circuit. DC leakage from coupling cap causes scratchy pot.
Top
User avatar
Buschman
Posts: 419
Joined: Sat Nov 12, 2005 5:12 pm
Location: Beaumont Texas
Contact:
Contact Buschman

Re: Marshall treble pot

Post by Buschman »

It's more than scratchy. It cuts out when you touch it.
I've got blisters on my fingers!
Top
User avatar
Structo
Posts: 15446
Joined: Wed Oct 17, 2007 1:01 am
Location: Oregon

Re: Marshall treble pot

Post by Structo »

Looks like you need a 250K audio taper pot.
Tom

Don't let that smoke out!
Top
Post Reply

Return to “Technical Discussion”