Hughes & Kettner Statesman Head EL34 Manuel page 7

Statesman is connected properly, but no sound is audible.
•
The guitar's VOLUME knob is turned all the way down.
•
The amp's VOLUME knob is turned all the way down.
•
The effects loop is active and set to SERIAL, but no effect device is
connected.
•
The anode fuse has blown. Ensure that it is replaced with a
fuse of the same rating.
•
The fuse for the tube heating tripped (the tubes don't glow). Ensure
that it is replaced with a fuse bearing the same rating.
The amp makes ringing noises
when played and tends to Feedback.
•
One or several tubes are microphonic. Replace the defective tube
with another of the same type.
Signs of tube wear such as increased microphonics and
noise, Treble loss, weak power output or muddy sound begin
reappearing just a few hours after replacing tubes.
•
The wrong tubes were installed when old tubes were replaced or
the amp was not biased properly. Take the amp to a professional to
correct the problem.
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