Laboga The Beast 30W Plus - head User Manual - page 12
LABOGA – The Beast 30 Plus
TROUBLESHOOTING
SYMPTOM
RECOMMENDED INTERVENTION
The amplifier doesn’t play,
LED diodes aren’t lit,
control light isn’t lit.
Check if the main fuse isn’t blown or if the power supply cord isn’t
broken (use another). If it still doesn’t help, contact Laboga service
personnel or any Laboga retailer.
There is smoke coming out
of the amplifier.
Immediately unplug the amplifier from the mains outlet and contact
Laboga service personnel or any Laboga retailer. Don’t repair it
yourself.
The amplifier doesn’t play,
but LED diodes lit.
First check if the speaker switch is at “ON”. Then check if guitar
cable is connected and if guitar cabinet works properly. Then, check
if guitar’s volume potentiometer, Master or other potentiometers
having influence on amplifier’s volume, are not turned down.
If the above mentioned hints fail, unplug the amplifier from main
outlet, wait at least 1 minute and check if anode fuse isn’t blown. If
the fuse is blown, change it for a new one, turn the amplifier on
again and observe the tubes for any unusual signs. If, after you the
change it, it blows again, contact Laboga service or any Laboga
retailer.
If the fuse wasn’t blown, put guitar cable to the Return socket at the
back of the amplifier and check if you can hear the guitar:
5). If you do, check if any of preamp tubes aren’t broken by
swapping them. If there is still no result, contact authorized
Laboga service or any Laboga retailer.
6). If you can’t hear the guitar, contact Laboga service or any
Laboga retailer.
Clean channel works, but
the distorted channel is
mute.
Check if any Drive Gain or volume knob isn’t turned down. If not,
unplug the amplifier from the mains electric supply, wait for the
tubes to cool down, unscrew rear grate and replace the V1. If there
are no results, contact Laboga service or any Laboga retailer.
The amplifier makes hum
even after turning Master
down.
Check if the outer metal cover in any of the power tubes is glowing
red (it is usually gray). If yes, immediately turn the amplifier off and
contact Laboga service or any Laboga retailer.
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