Mesa guys, need your help!

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Thread: Mesa guys, need your help!

  1. #1

    Join Date: Oct 2008
    Location: New Jersey, USA
    ME: Tom Anderson ProAm 7
    Rig: Brunetti XLII R-EVO

    iTrader: 4 (100%)

    Mesa guys, need your help!

    i picked up an old 2 channel Dual Rec (Rev F) awhile back.

    the last three rehearsals i did with it, i had the same problem occuring at times. out of nowhere, the volume would fade/ drop almost like i was using a volume pedal... put amp on standby for a bit, turned it back on, everything fine. i've never experienced this issue with any amp i've ever owned.

    could this be something as simple as a tube issue? i really hope it isnt something serious, as i really LOVE the way this thing sounds.

  2. #2

    Join Date: Jun 2006
    Location: Earth
    ME: 02 NAMM Jackson RR
    MA: Takamine 12
    MB: Spector Euro 5
    Rig: SLO|Road King|‹berschall

    iTrader: 10 (100%)

    Retube it.

  3. #3

    Join Date: Jan 2009
    Location: London, Ontario, Canada
    ME: WarmothTele/SE245
    MA: Seagull S12+
    MB: Fender Jazz Bass V
    Rig: Egnater Renegade 65

    iTrader: 2 (100%)

    Wirelessly posted ()

    I had an old Line6 Flextone II combo that did this when it overheated.

    I don't think there's any similarity in the issues, I just figured out what part of tube characteristics they were modelling with that amp

  4. #4

    Join Date: Oct 2008
    Location: New Jersey, USA
    ME: Tom Anderson ProAm 7
    Rig: Brunetti XLII R-EVO

    iTrader: 4 (100%)

    Quote Originally Posted by Matt C View Post
    Retube it.
    that was going to be the first thing i try, just wondering if this was a sign of some other problem.

  5. #5

    Join Date: Sep 2008
    Location: Black Swamp, OH
    ME: Rich Mahogany
    MA: Godin A6 Ultra
    MB: SR500
    Rig: Massive/Boobies

    iTrader: 16 (100%)

    Sounds like a tube thing. At least, that's where I'd start

  6. #6

    Join Date: Feb 2009
    Location: clearwater, FL
    ME: M8M!!!!!!
    MA: nope
    MB: :(
    Rig: 11rack :barf:

    iTrader: 0

    I killed my 2:90 a while back by running my cabs with instrument cables as opposed to speaker cables. sounds obvious I know, but I didn't realize what was happening until it was too late. so it's worth a look. apparently an amp has to work a lot harder to push the required current over the smaller gage wire used in instrument cables. took a few years, but it killed an otherwise healthy amp. towards the end I was experiencing symptoms similar to yours.
    ". . . . . . . ."

  7. #7

    Join Date: Feb 2013
    Location: Las Vegas

    iTrader: 0

    Tubes, brah.

  8. #8

    Join Date: Oct 2008
    Location: Victoria, BC
    ME: KxK customs
    Rig: Verellen Amps

    iTrader: 3 (100%)

    if you're not retarded you can test this.

    open the back panel of the amp to expose the tubes. with the eraser on a pencil tap each tube lightly while the amp is on and connected to a speaker. one of them will sound different than the others.


    if it's a power tube, you must replace the pair of tubes, if it's a preamp tube, you can get away with just the pre tube. it's sounds like a power tube.

    the nice thing about mesas is they sell their own tubes, they sound good and don't need to be biased(usually), so you can usually take care of it yourself.

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