Noob Looking for Parts

BTLINES · 03-06-2009, 01:03 PM

Hi, M8's,

Well, picked up my first Marshall last night, an MG80RCD. Got it cheap because it's a fixer-upper. Been surfing around for parts, not much luck yet, but I figured the peeps here would know where to get the best parts at the best prices.

So, the first problem I need to fix is that the shafts for the pots for bass and midrange on the clean channel are completely broken off.

I was able to find a parts list for this amp online, and it says the specific pots I need are a P105A (100Ka) and a P503b (5Kb).

Anybody have a recommendation for a source in the USA...or UK, if that fails?

I also need to get like 3-4 push-on knobs, although these don't seem too hard to find. Haven't seen them in packages of less than 15, though...anyone interested in going in halves on a set with me?

She's a bit buzzy when plugged in and not being played...we'll see if she still is after a thorough cleaning, checking connections and replacing those broken pots.

Thanks, and look forward to hearing your recommendations.

-Mike

JohnH · 03-06-2009, 02:16 PM

Have you tried Mouser Electronics - Electronic Component Distributor, in the US?

It sounds like it is a 100k audio taper(A) pot and a 5k linear taper(B) that you need. As long as the physical size matches, any should work, but also try to get them wit the same type of shaft so Marshall knobs fit.

BTLINES · 03-09-2009, 10:13 AM

Thanks for the recommendation. I found some pots with these values, but the shafts are way different. I'm going to keep looking, but at least I have some options. In the meantime, the gain channel's sounding pretty nice, and I've eliminated most of the buzz. Looks like I picked a winner!

03-06-2009, 01:03 PM	#1 (permalink)
BTLINES Junior Member Join Date: Mar 2009 Location: The Left Coast Posts: 2	Noob Looking for Parts Hi, M8's, Well, picked up my first Marshall last night, an MG80RCD. Got it cheap because it's a fixer-upper. Been surfing around for parts, not much luck yet, but I figured the peeps here would know where to get the best parts at the best prices. So, the first problem I need to fix is that the shafts for the pots for bass and midrange on the clean channel are completely broken off. I was able to find a parts list for this amp online, and it says the specific pots I need are a P105A (100Ka) and a P503b (5Kb). Anybody have a recommendation for a source in the USA...or UK, if that fails? I also need to get like 3-4 push-on knobs, although these don't seem too hard to find. Haven't seen them in packages of less than 15, though...anyone interested in going in halves on a set with me? She's a bit buzzy when plugged in and not being played...we'll see if she still is after a thorough cleaning, checking connections and replacing those broken pots. Thanks, and look forward to hearing your recommendations. -Mike __________________ "If you're going through hell-keep going" - Winston Churchill

03-06-2009, 02:16 PM	#2 (permalink)
JohnH Senior Member Join Date: May 2008 Location: Wollongong NSW Posts: 779	Re: Noob Looking for Parts Have you tried Mouser Electronics - Electronic Component Distributor, in the US? It sounds like it is a 100k audio taper(A) pot and a 5k linear taper(B) that you need. As long as the physical size matches, any should work, but also try to get them wit the same type of shaft so Marshall knobs fit. __________________ DSL401 8412 cab Crate Powerblock 1 x 12 Vintage 30 cab '76 Shergold Masquerader '93 Les Paul Studio '83 Roadstar

03-09-2009, 10:13 AM	#3 (permalink)
BTLINES Junior Member Join Date: Mar 2009 Location: The Left Coast Posts: 2	Re: Noob Looking for Parts Thanks for the recommendation. I found some pots with these values, but the shafts are way different. I'm going to keep looking, but at least I have some options. In the meantime, the gain channel's sounding pretty nice, and I've eliminated most of the buzz. Looks like I picked a winner! __________________ "If you're going through hell-keep going" - Winston Churchill

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Today
Marshall Amps	Sponsored Links __________________ This advertising will not be shown in this way to registered members. Register your free account today and become a member on Marshall Amp Forum