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Fender Bassbreaker 45 Needed

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  • Fender Bassbreaker 45 Needed

    I've contacted Fender. Waiting for a reply. In the meantime, I thought I'd ask if anyone has a schematic for the Bassbreaker 45.
    Thanks!
    "I took a photo of my ohm meter... It didn't help." Enzo 8/20/22

  • #2
    That sounds familiar, did you search this board?
    Education is what you're left with after you have forgotten what you have learned.

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    • #3
      Yes, I did and searched the interwebs. I certainly could have missed it somewhere, but came up empty.
      "I took a photo of my ohm meter... It didn't help." Enzo 8/20/22

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      • #4
        Here it is.

        Bassbreaker 45 Service Manual.pdf

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        • #5
          Thanks much!
          "I took a photo of my ohm meter... It didn't help." Enzo 8/20/22

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          • #6
            That's an "interesting" mess. I was chasing lack of screen voltage controlled by a FET for power scaling. It ends up that if bias voltage is lost, they remove screen voltage for protection. So, now I'm chasing bias V. It looks like I have a shorted -12V regulator and a shorted shunt regulator in the bias circuit. I'd have had a heck of a time finding the problem without a schematic, so thanks again!
            "I took a photo of my ohm meter... It didn't help." Enzo 8/20/22

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            • #7
              By the way, the designer of this amp should be taken out behind the factory and shot. You have to pretty much tear down the whole amp to get at anything.
              "I took a photo of my ohm meter... It didn't help." Enzo 8/20/22

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