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Carvin X100B Reissue Issue

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  • #1

    Carvin X100B Reissue Issue

    OK folks..I finally got the X100B Reissue from my friend to try ,and fix. It's an 08 with RevC main board. I have found R78 ,R79 (output tube filaments V17 pin 7, V18 pin 2) and R87 (V11 pin 5)burned . The tubes are original, and everything else seems to be in order. Could the age of the tubes have caused this? He had a lot of hours on this amp. Any thoughts?

    Thanks, Tom
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  • #2
    I'm thinking a plate to heater short in one of the power tubes. Yes, the age of the tubes can be what caused this. Replace the power tubes and R's- 78, 79, 86 and 87 with new resistors. Don't be too surprised if there are other things not visibly burned that have also failed.

    Chuck
    "Take two placebos, works twice as well." Enzo

    "Now get off my lawn with your silicooties and boom-chucka speakers and computers masquerading as amplifiers" Justin Thomas

    "If you're not interested in opinions and the experience of others, why even start a thread?
    You can't just expect consent." Helmholtz

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    • #3
      Thanks Chuck. I'll be checking everything I can...just lookin for a little input from someone that may have seen this same issue.

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