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PLA 240 Small Room Loop Amplifier
Troubleshooting
Problem
No Sound
Low Sound
Distorted Sound
Background
noise (hum or
buzz)
Solution
-Re-Check all connections
-Check diagrams
-Amplifier not switched on or no power
-Microphone or audio source not connected or selected
-Check Digital Audio setting on TV is "PCM"
-Hearing Aid not on the "T" or Loop Program
-Volume is muted - press mute button on remote once to
check
-Microphone too far from sound
-Loop wire not connected correctly
-Volume set too low - increase volume
-TV or audio source volume set too low - increase volume
on source
-Volume control set too high. Loop level indicator showing
solid (not flickering) - decrease volume
-TV/Audio source volume set to high - decrease
-Microphone too close to loudspeaker - move away
-Microphone plug damaged
-Too many inputs in use at once - select less or reduce
volume on all
-If noise remains when the loop system is turned off but
hearing aid is still on loop program, this interference is
caused by other equipment such as florescent lights or
dimmer switches. With the loop amplifier turned off and
the hearing aid still on the loop program, turn suspected
items off, one-by-one, until the interference source can be
identified
-If noise stops when the loop amplifier is turned off there
may be a fault in the system or microphone lead or noise is
being picked up by the microphone
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