Vibrolux Reverb

Discussion in 'Amps/Cabs Tech Corner: Amplifier, Cab & Speakers' started by 335guy, Feb 20, 2012.

  1. 335guy

    335guy Member

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    I have a VR that has started to sound quite terrible. It has lost power, tone, has no bass and is quite distorted. I replaced the power tubes, thinking that might solve the problem, but it didn't. All the pre amp tubes seem fine, but I haven't tried replacing them yet. What could cause this? The caps were replaced a few years back as well. Would a rectifier tube going bad cause this? If I cannot figure it out, to the tech it goes. Thanks.
     
  2. Don A

    Don A Silver Supporting Member

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    Do you have any spare preamp tubes? I'd try swapping some in. I'd try the PI tube first (V6 - the last tube before the power tubes - it should be a 12AT7).
     
  3. Blue Strat

    Blue Strat Member

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    Do both channels sound the same way? Have you checked the bias on the power tubes?
     
  4. crunchman

    crunchman Member

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  5. Zerksies

    Zerksies Member

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    I would check the bias on the power tubes. then i would think of checking the phase inverter. If you still have a problem i would start changing preamp tubes with know good ones
     

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