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Kay 720 needs power transformer replacement...?

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  • Kay 720 needs power transformer replacement...?

    Light bulb limiter shines brightly with all secondaries disconnected. I'm planning to replace the cap can as well. The schematic doesn't list voltages or specs for the power transformer. The amp supposedly puts out 20 watts from a 5U4GB rectifier, a pair of 6L6GCs, one 5879 and one 7199. Any suggestions on a replacement power transformer, or on how to determine a suitable replacement? Thanks for your help

    kay720.pdf
    Last edited by acorkos; 10-29-2017, 02:19 AM.

  • #2
    Valco/National/Supro made? Maybe classictone can help.

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    • #3
      The Hammond transformers at CE Distribution with the drop-in mounting centers and correct filament secondaries...any one of these seem most appropriate?...:

      270HX
      176 VA
      550V C.T. @ 230ma

      272HX
      186 VA
      600V C.T. @ 230ma

      273BX
      182 VA
      700V C.T. @ 201ma

      274BX
      198 VA
      750V C.T. @ 201ma

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