Laboga AD 5300, Руководство пользователя

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While playing there are weird
sounds – crackle, or the
sounds vanish completely
Check if the power cable is inserted properly and if it isn’t falling out
of the socket. Additionally, check the quality of the speaker’s cable
– if it isn’t damaged and if the cable has the proper diameter.
The amplifier gives
uncontrollable weird, loud
sounds even if guitar is
unplugged.
Observe if it happens on both channels (this information can be
crucial while consulting the service department). Unplug the guitar
and switch to the distorted channel – watch if sounds cease when
you mute Lead Gain :
• If yes, unplug the amplifier from the main power supply, wait
for the tubes to cool down, unscrew the rear grate and change
V1 for any other tube. If the problem disappears, keep such
tube configuration.
• If sounds don’t fade, turn the Lead Volume down and check if
sounds disappear. If yes, unplug the amplifier from the mains
electric power, wait for the tubes to cool down, unscrew the rear
grate and change V2 for V3 or V4. If it doesn’t, turn the
Master
down. It could happen that sounds won’t stop even after turning
the
Master down - then contact authorized Laboga service and
tell about your observations
Footswitch won’t change
channels
Unplug the cable from the Footswitch and try to change channels;
• If channels can be changed, then plug in another footswitch
cable to the amplifier. It should be a “stereo” cable. You can
also plug in a “mono” cable, but the
Master in the footswitch will
not be active and only Master 2 will work.
If that doesn’t help, contact authorized Laboga service or any
Laboga retailer.
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