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Power trans EVH 5150-3

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  • Power trans EVH 5150-3

    I have a 5150-3 with a bad power transformer. Measuring the secondary wires , unplugged , i have no acv anywhere but on the filament tap i have 119vac , should be 5.9vac .
    So , doubting that Fender will sell me one ( i did email their support) , can you tell me where to buy one ?
    Click image for larger version

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ID:	964551 EVH_5150III_50W_Mexico_Schematics (1).pdf Or can you take a look at the schematic and tell me what spec i need ? It doesnt list all the secondary voltages .... wondering if i can get a Hammond , or ??

  • #2
    Just looked at the service manual and the transformer is indicated as unique Fender part.

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    • #3
      If you needed a water pump for your Chevy car, would you call General Motors for the part? No, you'd call a dealer or a parts store. Your schematic calls out Fender part number 0079095000

      Contact a Fender parts seller and ask if they can get it.
      Education is what you're left with after you have forgotten what you have learned.

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      • #4
        I did Enzo . I will find out monday if i can get one

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        • #5
          119v on the heaters ... ! It is highly unlikely to be an accurate result.
          Remove a 6L6, have you continuity between pins 2 & 7 of the valve?
          If yes, you are mistaken regarding the 119v measurement.
          I would firstly expect to see a pair of burnt up 100R resistors. R165 &166 if you have that much on the heaters.
          Support for Fender, Laney, Marshall, Mesa, VOX and many more. https://jonsnell.co.uk
          If you can't fix it, I probably can.

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          • #6
            Yes the 2 100ohm burned up with no tubes in the amp . Pulled the 2 filament wires off the pcb and have 119vac between them . All secondary pt wires un-hooked . No fuses are blown , not even the 7 amp for the ac heaters.

            The rest of the secondary taps have very low ac

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            • #7
              Originally posted by Valvehead View Post
              Pulled the 2 filament wires off the pcb and have 119vac between them .
              Might be "ghost voltage".
              Do you have continuity between the 2 filament wires?

              - Own Opinions Only -

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              • #8
                Originally posted by Helmholtz View Post

                Might be "ghost voltage".
                Do you have continuity between the 2 filament wires?
                nope

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                • #9
                  Originally posted by Valvehead View Post

                  nope
                  Proves that the PT is bad and the 119Vac was ghost voltage.
                  - Own Opinions Only -

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