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Audio Design Associates
www.ada-usa.com
PTM-3245
www.ada-usa.com
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If All Else Fails –Call Us for Help
Call your ADA dealer or ADA’s Technical Service Department toll free a 1-800 HD-AUDIO. We
can often solve the problem with simple diagnostic tests you can perform yourself. If we determine
that your PTM-3245 will need further inspection or servicing, we will authorize return of the unit to
us and advise you of the correct procedure.
Troubleshooting Chart
Trouble
Probable Cause
Remedy
Power cord is disconnected
Connect power cord
Trigger Bypass
selector switch is
in wrong position
Check for correct position of the
Trigger
Bypass
switch
AC Voltage
selector switch is in
the wrong position
Make sure the switch is in the correct
position for your region
No power
AC fuse blown
Replace with same value fuse
DC trigger source wired in
reverse or voltage too low
Check polarity of DC source with a
voltmeter. Try connecting a 9 V battery to
the
12v DC input
Channel pairs will not turn on
with DC voltage
Trigger Bypass
selector switch in
wrong position
Make sure
Trigger Bypass
selector switch is
in its
12 V
position
Level controls turned too low
Turn level controls clockwise
Bad connection from
preamplifier or controller
Check input connections or try a different
set of cables
Over-current protection circuitry
has been activated
Check speaker load impedance
Check speaker wires and connections
Power but no sound
PTM-3245 has overheated
Allow PTM-3245 to cool. Check that there
is adequate ventilation around the PTM-
3245. Be sure the load impedance of each
channel is no less than 2 ohms
Damaged speaker
Connect each speaker to the opposite
channel on the PTM-3245. If the same
speaker remains distorted, the speaker or its
wire is damaged. If the other speaker
distorts, the problem may be with the
PTM-3245, the preamp, or a source
component
Distorted sound
Problem with preamplifier or
source component
Switch the left and right input cables. If
distortion moves to the other channel, the
problem is with a component other than the
PTM-3245
Improperly shielded or
“directional” interconnect cables
from preamplifier to PTM-3245
Use standard shielded interconnect cables
Hum and/or buzz through
speakers
Ground loop at the equipment
rack
Install nylon shoulder washers on both sides
of the panels of all equipment to insulate
metal from touching the rack
