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Appendix A: Service Information
If you think your TAPCO powered mixer
has a problem, please check out the
following troubleshooting tips and do
your best to confi rm the problem. Visit
the “Talk To Us” section of our website
(www.tapcoworld.com) and contact
our technical support heroes and get
some ideas. You may fi nd the answer to
the problem without having to send your
powered mixer away.
Troubleshooting
Bad Channel
• Is the break switch on?
• Is the EQ set up nicely?
• Is the gain switch set correctly?
• Is the level up enough?
• Is the channel OL LED on?
• Try the same source signal in another
channel, set up exactly like the suspect
channel.
• Is phantom power required for your
microphones?
Bad Output
• Is the main master level control turned
up?
• Are the graphic EQs set to reasonable
levels?
• Is the FX level going to the main mix too
high (OL LED on)?
• If it’s one of the main speaker-level
outputs, try unplugging its companion.
For example, if it’s the 1/4" left main
output, unplug the left Speakon output.
If the problem goes away, it’s not the
powered mixer.
• If a left speaker is presumed dead,
connect it to the right output instead.
If the problem stays with the same
speaker, check the speaker wiring, or
any speaker fuses.
• Unplug anything from the main line-level
outputs, or other line-level outputs, just in
case one of your external pieces has a
problem.
• You may be overdriving the amplifi ers.
Check the loudspeaker average load
impedance is not less than 4 ohms.
Check the speaker wiring. Check that
the meter CLIP LEDs do not come on.
Noise
• Turn the channel levels down, one by
one. If the sound disappears, it’s either
that channel or whatever is plugged
into it, so unplug whatever that is. If
the noise disappears, it’s from your
whatever.
Power
• The power LED should come on if the
powered mixer is connected to a
suitable live AC mains outlet, and the
power switch is on. Check the power
cord is securely plugged in.
Repair
For warranty repair or replacement, refer
to the warranty information on page 27.
Non-warranty repair for TAPCO products
is available at a factory-authorized service
center. To locate your nearest service
center, call our Tech Support department
at 1-877-827-2669, Monday-Friday, 7 am to
5 pm Pacifi c Time, to explain the problem.
Tech Support will tell you where the nearest
factory-authorized service center is located
in your area.