Polytron PMA active speaker service, the engine is on but there is no sound.
This time, we're here for a Polytron PMA active speaker repair service. The problem began when the speaker was being used to play music and the owner was simultaneously using a grinder. As soon as the grinder was turned on, the home circuit breaker (MCB) tripped, as the circuit breaker was too weak. After turning the MCB back on, the Polytron PMA active speaker suddenly stopped producing sound, even though the display was back on. The cause of the damage to the Polytron PMA active speaker was an electrical short circuit caused by the grinder. This is where the power supply module in the Polytron PMA active speaker disconnects a resistor as protection to prevent the high current from the short circuit from damaging other crucial components. This is the advantage of the latest series of Polytron PMA active speakers compared to the older series.
Polytron PMA active speaker repair, engine running but no sound
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