Hoffman Amplifiers Tube Amplifier Forum
Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: michael on January 02, 2014, 06:19:30 am
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on my fender vibrolux reverb everything works but the reverb and the vibrato. i hook up my reverb pan and cables and pedal off my twin reverb as they work great but still no reverb. i will swap tubes first for the reverb to see if that is the problem but i notice that when i turn on the intensity for the vibrato the roach light goes on but it will not flicker it just stays on solid. could the resistor be bad in the roach? should i replace it? thanks for info
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when i turn on the intensity for the vibrato the roach light goes on but it will not flicker it just stays on solid. could the resistor be bad in the roach? should i replace it?
The resistor inside the roach has nothing to do with making the neon light flash. Try changing the tube first.
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With the original [bad?] rev pan back in the Vibrolux, can you get it to crash when you shake it? (the can, that is. The reverb can!)
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Michael,
Did you amps was working good before or it is a new buy and you never test the amps ?
Vibrato need a pedal signal or a short on the RCA phono plug at the back of the amp . Nothing plugged = no vibrato .
Reverb do not need pedal.