Mesa F-30 Problems/tubes Help

Discussion in 'Amps/Cabs Tech Corner: Amplifier, Cab & Speakers' started by Nevada240, May 19, 2015.

  1. Nevada240

    Nevada240 Member

    Feb 27, 2012
    Shenandoah Valley, Virginia
    My amp has been having this reoccurring problem, when I turn it on its static for about two seconds and then it's fine...for a few minutes anyways, then it starts to dip in volume and gets more distorted and then eventually stays like that. I've tried a lot of suggestions and nothing seems to work. The only think I haven't tried is swapping the power tubes (EL84) because I don't have any but before I send it back to Mesa I was going to order a premium set and give it a try. Any suggestions as to what to do and some suggestions on a good pair of power tubes? Thanks
  2. AR-305

    AR-305 Member

    Dec 20, 2007
    NW North Carolina
    Certainly try an entire set of new tubes before shipping. JJ's are fine for that amp.

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