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Mesa Boogie 50 Caliber circuit board

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  • Mesa Boogie 50 Caliber circuit board

    Turns out after speaking to Mesa that the wire is a ground and should be soldered to the ground wire attached to the speaker inputs on the rear of the chassis. Easy fix . Good support from Mesa

    Now all I need is someone who replaced that tiny reverb and installed a larger tank and soldered the RCA cables
    to the CB



    Hello I am in need of a picture of the circuit board for the .50 caliber head with EL84's not the plus version.

    My reverb tank has a short white wire dangling from one end. I dont know where it should be soldered to. I was told its a ground but I want to make sure.

    Thanks
    Good deals with Tonedude, Mttg,
    Guitar23, thesense, thenakedarab, abceightsix, imograss

  • #2
    Does this help? Not a picture, but a schematic.

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    • #3
      looks like its been modded... the resistor on the bottom is on the wrong side-- does that thing have the lead drive mod? sure looks like it!

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      • #4
        Hey thanks to all. I am not that technical to read the schematic, but I figured its a ground. Just dont know where to ground it on the board. I picked this up at a garage sale. You wont believe what I payed but I do know it was stored in the basement for a while. If its modded I would not know till I see a pic of another board CAn I just solder this to the chassis?
        Good deals with Tonedude, Mttg,
        Guitar23, thesense, thenakedarab, abceightsix, imograss

        Comment


        • #5
          bump?
          Good deals with Tonedude, Mttg,
          Guitar23, thesense, thenakedarab, abceightsix, imograss

          Comment


          • #6
            on the schematics I do see a ground for the reverb so that's probably what i is.
            http://www.guitarampboard.com

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