Mesa M-2000 fet problems...

Discussion in 'Amps and Cabs [BG]' started by JoshB, Dec 2, 2005.

  1. JoshB

    JoshB A great man is always willing to be little. -RWE

    WARNING!!! If you're not familiar with the Mesa m-2000, this might not make a whole lot of've been warned.

    So, I got my m-2000 today and to my dismay, the first time I plugged the sucker in, all I got was a loud loud LOUD screaching noise. I was more than a little disappointed, so to make a long story short, I took the dang thing apart which is not something I reccomend without having a large quantity of time on your's a pain in the butt.

    I checked the pots and fixed the main output pot which is what was causing the nice loud screeching noise. I then put it back together (minus the top cover) and fired it up. The tube channel works great but if you try to use the fet channel by itself, there is very very little volume.

    Now, if you put it into mix, the volume sounds fine, but it could just be the tube channel. The volume drops again if you turn the mix knob almost all the way to the right.

    I'm at a loss for what else to try...any of you other guys have some ideas for me?
  2. Nightbass


    May 1, 2001
    Seattle, WA
    I've got an M-2000 schematic around here somewhere, but seriously, give Mesa a call. You'll speak with a tech who knows the amp, and he'll give you some direction. Often these things are well-known problems. I had issues with my W'bout and they had it all figured out before I even called, and remedied the situation above and beyond my expectations.

    So give 'em a call. They won't bite. They're amongst the best in the business for customer support.
  3. QTraXQ


    Aug 16, 2002
    San Antonio, TX
    I agree.. I also have an M-2000 and had issues with the fan making some noise and issues with 60Hz hum.. Was not able to resolve the 60Hz hum issue, but fan was fixed.. I called the Support number and they assisted me over the phone and directed me to an Mesa Boogie repair office.

    Give them a Call.
  4. Nighttrain1127

    Nighttrain1127 Supporting Member

    Nov 27, 2004
    Near Worcester MA
    This amp is known for the pots coming lose if it is not in a rack. When I first got mine you could never tell what was going to happen when you turned a knob. If you are getting low vol out of the fet channel check the fet master pot see if it is not loose too. :eyebrow:
  5. tombowlus

    tombowlus If it sounds good, it is good Gold Supporting Member

    Apr 3, 2003
    North central Ohio
    Editor-in-Chief, Bass Gear Magazine
    Bummer! I have never experienced anything like that with my M-2000. I hope that you can get it resolved as painlessly as possible!

  6. JoshB

    JoshB A great man is always willing to be little. -RWE

    Yea...the same night I posted this, I actually went back into the head and fixed that exact thing. The pot had come a little loose and all it needed was to be tightened up and I was in business. I used it all weekend long at practice and 2 shows and it performed like a champ. Thanks for everything y'all... (hey, I'm from the midwest, I can use the phrase...;))
  7. icks


    Jul 12, 2001
    never had bıg problem wıth mıne, perhaps the master pot of fet ıs done ...

    Great soundıng amp by the way !!