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Behringer PPA2000 SMPS repair/schematic

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  • Behringer PPA2000 SMPS repair/schematic

    I'm about to tackle a Behringer PPA2000BT power supply repair. Of course I can't find a schematic. Leaving it all in tact I do believe its the switchers FGH40N60 that are bad or the 2 820 mf caps. Before I dive in does anyone have an opinion about this unit? The symtom is that the control panel simply flashes AND the on-off switch will not stop it. No voltage at any of the regulators of the collector of the audio amps. (IRFP4227). Thanks

  • #2
    I found the oscillator IC underneath but it's unreadable. The customer has used it 3-4 years so he's not in love anyway. Putting it back together awaiting word on a new board or schematic from Behringer.

    BUT I learned for the 10th time to NOT try to lift SM diodes with only a solder iron. If I do get a schemo I'll have to repair print. Have a great day!

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    • #3
      Originally posted by mikeskory View Post
      BUT I learned for the 10th time to NOT try to lift SM diodes with only a solder iron. If I do get a schemo I'll have to repair print.
      Have you tried Chip Quik?

      "Everything is better with a tube. I have a customer with an all-tube pacemaker. His heartbeat is steady, reassuring and dependable, not like a modern heartbeat. And if it goes wrong he can fix it himself. You can't do that with SMD." - Mick Bailey

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      • #4
        Do you know what the part number is for the SMPS, or maybe upload a picture of it? I might have one.
        "Yeah, well, you know, that's just, like, your opinion, man."

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        • #5
          The Joker: Yes I have some Quick Chip...but I was in a hurry and thought I could just flip it up to test it. The first one went fine. The 2nd...not so much. I also broke the tiny tab off the 2nd diode.
          The Dude: You mean of the entire board? Yes I'll post it tomorrow. It includes the power amp also.

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          • #6
            Oh, never mind then. The one I have is SMPS only.
            "Yeah, well, you know, that's just, like, your opinion, man."

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            • #7
              OK...I kept looking at the diodes. I think I have the right number now. ES10. Is there a common diode I could sub for this? Description is 2 Amp Superfast Rectifier

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              • #8
                I replaced my broken diode, ordered/found the caps but still half power power. Ended up ordering a new board from Behringer which was cheap enough. Customer happy and paid.

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                • #9
                  One of the issues that I have occasionally run in to with surface mount parts is the pcb glue machine.
                  If it puts down too much it can be a real bear to break the glue loose before damage occurs to either the component and/ or the pcb.

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