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13
SVT-3PRO Bass Guitar Amplifier
Troubleshooting
In the unlikely event that your SVT-3PRO should malfunction, take a few minutes to
troubleshoot it before you call for service. You can save yourself time and money by doing
it yourself, and often the cure for the problem is something quite simple.
NO SOUND
LEDs LIGHT
Check amp controls, check
for signal from instrument
NO SOUND
Listen for hum
SOUND OK
NO HUM
Check speaker
SPEAKER OK
SOUND OK
HUM
Unplug instrument,
touch tip of cable
NO CHANGE LOUD HUM
Replace cable Check bass pickup
NO CHANGE SOUND OK
SEE BELOW
LEDs DON’T LIGHT
Check AC outlet
OUTLET OK NO POWER
Check power cord,
fuse, power switch
Check house fusebox
or circuit breaker
OK
NO SOUND
SOUND OK
Check instrument, cables
POOR SOUND
Check speaker(s)
SPEAKER(S) OK,
POOR SOUND
SPEAKER(S)
DEFECTIVE
Replace speaker(s)
SOUND OK
POOR SOUND
SEE BELOW
If the problem isn’t covered above, or if the steps lead you here, then contact your Ampeg
dealer for service information. Also, you should refer the amp for servicing if it gets
dropped, has liquid spilled into it, or sustains damage to its power cord.
The SVT-3PRO is covered with sheet metal and aluminum, not unlike robots, spaceships and other cool things.
Clean with a dry, lint-free cloth.
Never spray cleaning agents on the SVT-3PRO. Avoid abrasive cleansers which would
damage the finish.
Ampeg continually develops new products and improves upon existing ones. For this reason, the specifications and
information in this manual are subject to change without notice.
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