Need info on a Power transformer

Discussion in 'Amps/Cabs Tech Corner: Amplifier, Cab & Speakers' started by 5150loveeddie, Aug 28, 2006.

  1. 5150loveeddie

    5150loveeddie Member

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    D.E Ltd T3560 found in 50w 1987 Marshall.

    Need info on the wiring of each terminals
     
  2. 5150loveeddie

    5150loveeddie Member

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    [​IMG]

    Here is the PT in qts!!

    So far I got:
    Terminals 3&5 are HV (320VAC each)
    4 goes to ground (CT)
    7&9 are for the Heaters (3.2VAC each)
    8 CT (heaters..)

    Need to know the rest!!

    Many thanks!!
     
  3. tonezoneonline

    tonezoneonline Member

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    Shoot me an email and I'll send you a schematic and wiring diagram.
    Include the model number is the amp?
     
  4. 5150loveeddie

    5150loveeddie Member

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    Thanks Mike but it ain't that one you send me, It doesn't have any primary wires......only 9 terminals!!!

    Anyone else??
     
  5. tonezoneonline

    tonezoneonline Member

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    Probably because it's an non original transformer.The 1987's had a 1202 transformer.
     
  6. 5150loveeddie

    5150loveeddie Member

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    Yep, that's it, or it might have something to do with the Canadian market in the 1970's!!!!!!

    Thanks anyways!!!!
     
  7. donnyjaguar

    donnyjaguar Member

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    Didn't the EL34 become 6550 tubes before they hit the retail stores in Canada? I recall reading that somewhere. Not a Marshall guy here - never had a hankering for one despite my love of cock rock and hair metal.
     
  8. 5150loveeddie

    5150loveeddie Member

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    Yeah it did............el34/6550

    Problem is resolved with that PT...

    For those interested
    -Terminal 1 is the higher primary tab (B+, heaters will be affected, 415/420VDC, 6.6VAC), and should be jumped to power switch.
    -Terminal 2 is hook to wall current
    -Terminals 3 and 5 are the HV
    -Terminal 4 is the HV center CT (goes to ground)
    -Terminal 6 is the lower primary tab (B+ = 390/400VDC, heaters are a low at 5.9/6VAC in my case..it should be jumped to the power switch instead of terminal 1 for lower B+
    -Terminal 7&9 are the heaters
    -Terminal 8 is the heaters CT (goes to ground)
    - no bias supply so use one side of the HV (pin5) and use a 220k/100k resistor (depending if you are using the higher or lower HV set up) prior to the diode in the bias current line......
     

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