Hello i need to replace my master pot what kind of pot i have to search for ?

Sorry but if I wrote more than a line It returned me a sql error first of all thanks for your help I need to know the specifications for the mustang III master pot that has broken and has to be replaced can you help me? Thanks

try this site, I've found quite a few odds and ends here
https://www.amprepairparts.com/fenderpots.htm

Thanks for your help I knew this site but I was not able to find the right model. anyway I wrote to their customer service hope they can help. is it possible that fender assistance can not help me with the pot model?

You need to look for a "rotary encoder", it's not a pot.
I bet it has a reference number on there if you can see the back of it

Thanks a lot. so you think I have to open the amp to see the reference? Oh it's a mess for me. The tech who has to repair just wanted to order the piece and then come to my house to repair it. Is there an electronic scheme for mustang III ? Fender assistance help me please !edit: ok i found the scheme for download in another post on this forum, I don't know if it will be enough for the tech. Anyway any further suggestions are welcome.thanks

Frank, a very kind guy from www.amprepairparts.com told me that there are no replacement part for all the cheap (UNDER $500) fender amps out of warranty. Under warranty they should replace the amp with a new one. They are not repairable. Mine is still under warranty but I don't know if here in Italy warranty works the same way, most of all now that old Mustang series is discontinued. What a shame. My amp is like brand new and I am supposed to use the master volume turning it up and down with my fingertip. Anyway i am waiting for good news from my seller who was going to contact fender Italy.finger crossed

I agree it's a shame and they didn't have to do it that way. They could have continued to support these amps. Fender just lowered the warranty to 1 year for the new line of Mustang amps.

What did we learn? Never ... and I mean NEVER buy a digital modeling amp from Fender Corp. They are designed to end up in a landfill within 1-2 years so you have to come back and buy another one (repeat sales in this case are good for business, bad for environment).

To be honest he told that it's the same for Marshall and other companies who sell amps in that price range.so, not only fender. Anyway it's a pity! You are right in the future I will think about it twice before I buy this kind of low priced stuff.

yeah true. It's a digital modeling mentality that needs to stop. Fractal Audio builds modeling stuff you wouldn't chuck into a landfill after 2 years. If they can bring the price down, they would squash all the rest IMO.

It is a shame, while $279 may not seem like a lot of cash to some people. to others, it is.

My MIII v1 needed the on/off switch replaced, (it just fell to pieces one day) I was able to order that part from the web site I posted, and since my brother in-law is a electronics repair guy, we went about replacing it.

Believe me when I tell ya, out side of the speaker, there's not much to these things... Took longer to figure out how to remove the "head" if you can call it that, than it did to replaced the switch.

I can see why they are considered disposable.

I still use the MIII but it's not my main amp. I love the convenience of these, but I'd not bank on one as a main gigging amp. They're fun, but not sure how reliable. I'll never sell my tube amps.. not ever...

For me it's not so much about the price as the environment. Amps are big. They take up a lot of space and don't decompose quickly. IMO, it's just plain irresponsible to push for a fast life cycle on a device like that.

Also, if you're going to make me buy my amp over and over every couple of years, $179 is more like it.

So ghost of strings you're saying all/most Mustang series 1 are in landfill?
That's nonsense. They have few repairable parts, but overall they're reliable.

I bet anyone with some electronics knowledge could replace the encoder - it won't be that specialised a part - but you'll need a micro soldering iron for SMD sizes.

No, I'm saying the first time something major goes wrong, that's where it's headed. And it's a matter of time. Even the old high quality vintage amps need service.


How much does a micro soldering iron plus the part and solder cost? And just to potentially find out you bought all that stuff and still couldn't fix it? Thanks but no thanks. Never again.

Cost ? pennies /cents! 20 dollars for a soldering iron.
Any 'modern' tech should be able to fix it if they can figure out what the part number is. If it's an IC that's failed yes nearly impossible to diagnose.
You must have had one go bad on you!