Tapco THUMP TH-15A, Owner'S Manual

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Appendix A: Service Information
If you think your TAPCO product has a
problem, please check out the following
troubleshooting tips and do your best to
confirm the problem. Visit the “Talk To Us”
section of our website (www.tapcoworld.
com) to contact our technical support
heroes and get some ideas. You may find
the answer to the problem without having
to send your TAPCO product away.
Troubleshooting
No Power
• Our favorite question: Is it plugged in?
• Make sure the line cord is securely seated
in the line cord socket and plugged all
the way into the AC outlet.
• Make sure the AC outlet is live (check
with a tester or lamp).
• Is the POWER switch in the ON position?
• Are the power LEDs on the front and rear
panel illuminated? If not, make sure the
AC outlet is live. If so, refer to “No Sound”
below.
• If the power LEDs are not illuminated, and
you are certain that the AC outlet is live,
it is possible the fuse has blown.
To remove and replace the fuse:
1. Disconnect the power cord from the
IEC socket.
. Remove the fuse drawer by prying it
open with a small screwdriver. It will slide
all the way out.
3.
Remove the fuse and replace it with
an equivalent-type fuse.
115 VAC unit: 6 amp slo-blo (T6AL/250 V)
230 VAC unit: 3.15 amp slo-blo (T3.15AL/250 V)
4. Replace the fuse drawer by pushing it
all the way back into the IEC socket.
If two fuses blow in a row, then something
is very wrong. See the “Repair” section on
the next page to find out what to do.
No Sound
• Are the power LEDs on the front and rear
panel illuminated?
• Is the LEVEL control turned up?
• Is the signal source turned up? Make sure
the signal level from the mixing console
(or whatever device immediately
precedes the loudspeaker) is high
enough to produce sound.
• If it’s a stereo pair, try switching them
around. For example, if a left speaker is
presumed dead, switch the left and right
cords at the speakers. If the problem
switches sides, it’s not the TH-15A. It could
be a bad cable, or no signal from the
mixer.
Bad Sound
• Is the input connector plugged
completely into the IN jack?
• Is something connected to the OUT jack?
Try unplugging it. If the sound improves,
whatever was plugged into the OUT jack
may have affected the signal.
• Is it loud and distorted? Reduce the signal
level at the mixer.
• If possible, listen to the signal source with
headphones plugged into the preamp
stage. If it sounds bad there, it’s not the
loudspeaker.
• Too much bass or not enough bass?
Move around the room and see if the
bass response changes. It’s possible your
listening position coincides with a room
mode where the low frequencies either
become exaggerated or nulled. If so, try
moving the loudspeakers to a different
position, or moving your listening position.
FUSE