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Traynor custom 40 low voltages

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  • Traynor custom 40 low voltages

    I replaced a buldging 450V cap but when the B+ rail hits a couple of 3 pin transistors the volts drop pathetically. Any one have a schematic for this or seen this issue? All tubes are pulled.

    Now this is a high school amp but I'm considering bypassing these regulators etc and going simple/old school or giving it to an uber tech.

    Thanks, eh.

  • #2
    You can download the full service package for the YCV-40 from the Yorkville website. You will see that the transistor in the B+ rail is the standby switching.

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    • #3
      Early YCV40

      If this is an very early YCV40 it may be missing a resistor and you will have repeat failure of the cap ! One of those crossed my path once .

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      • #4
        Well, it working alot better now. I did the Taynor suggested circuit upgrades. High Voltages are back though I suspect it was a bad solder joint on the IRF 830 B+ regulator.

        Now the only issue is after playing it for a bit say 5-10 minutes it belches out a loud .HUMMM. I've been testing the pre/loop out and they sound fine. Ever experience that rude honk?

        thanks. guitarist

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