10. TROUBLE SHOOTING
10.1 No sound at all or intermittent sound
• Check the guitar cable and amplifier / mixer you are using.
• Check that the battery is not discharged. If the sound is noisy
or distorted, replace the battery.
• Check that the transducer and battery connectors are
inserted onto the pin headers of the preamp correctly.
• Check that the plug is making good connection with the out-
put jack. It may be so that the output jack is not sticking out
far enough when the strap button is on. To check, unscrew
the strap button off and plug in to the jack. If the symptoms
go away the output jack needs to be removed and the nuts
adjusted so the jack sticks out further.
• Check that both input gains are turned fully clockwise- all
the way up.
• Check that the ribbon wire form the remote control is in-
serted correctly. If it feels or looks like it is not connected
properly- unlock and re-install.
10.2 Loud hum
• Check to see that the connectors of the UST / AST are
inserted with the two holes up. If these connectors are up-
side down the system will work but it will buzz.
• Check that the connectors are inserted correctly onto their
pin headers at the preamp.
10.3 Resonance or distortion with some played notes.
There are a couple places where a resonance can typically oc-
cur with some notes, causing distorted-sounding output. First,
check that the lead portion of the transducer to the preamp is
not touching anything and that the battery or output wires are
not loose and thus cause resonance.
With the UST, another place, which in some cases has caused
resonance, is the UST hole from the saddle slot to the inside of
the guitar. Using a soft padding in it has cured these problems
effectively.
With the AST, if resonance is occurring, it may be coming form
the first 5 mm (.20”) of the “lead” wire coming from the AST.
Using double stick tape, stick this first 5 mm (.20”) of the lead
to the guitar.
10.4 Imbalance, one or several strings sound louder or
quieter than the others (with UST)
If there’s only a very slight imbalance, let the saddle “shape” on
the UST for a few days. The fault may be repaired on its own. Users
have reported that after three (3) days the saddle has settled on
the UST and the balance becomes perfect.
10.5 Possible reasons for imbalance:
• The saddle or the bottom of the saddle slot is not flat.
• The saddle fits too loosely in its slot.
• The saddle slot might be too tight for the saddle to go in all
the way. Try pushing on the saddle firmly to seat the saddle
all the way down on the transducer.
• The saddle is too short.
• There is debris in the saddle slot.
• The angle of some of the strings behind the saddle is too low
or too high.
• The top of the guitar is bent.
• The pickup is not installed all the way to the end of the
saddle slot.
• If the material of the saddle is bone.
Bone is a natural material and the density and grain may not be
consistent. This may cause inconsistencies in the way the sound is
distributed making some strings louder or softer than others. We
highly recommend a manmade material for the saddle.
10.6 If the balance problem does not disappear on its own,
do the following:
• Check there is no debris in the saddle slot.
• Check the bottoms of both the saddle slot and saddle. They
should be flat and straight. It is common that the guitar top
“lives” and moves and because of this the saddle slot could
become curved, not straight. This may happen especially during
transport or by change of season when the humidity changes.
By making the saddle flexible, as in picture, these problems
can be greatly avoided.
• Check saddle is not loose in its slot. The saddle should be so
(16 stránky)
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