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troubleshooting VTL puzzle.

One day I've started to bias my amp and I've realized that one of the bias jackets doesn't show any voltage(realy small ~2.5mV). The VTL's 10Ohm test went through successful. When I've opened my amp and surfed though the points from where the bias voltage is measured, I've realized that 1k resistor was blown and showed some 270k instead(almost infinite for the small current/voltage)

What could cause this resistor to blow?
Is there any role of that resistor in the signal operation or DC suply for the tube?

Is it possible to aqcuire a detailed circuit diagram of any VTL amplifier?
128x128marakanetz

Showing 1 response by marakanetz

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marakanetz OP
5,473 posts
 
ummm... that was a while ago:
jcbtubes was right.
there was a bad tube that actually is causing this 10Ohm resistor to bloe.
EveAnna Manley sais that this resistor is kind-of a fuse that prevents the bias circuit to blow.
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