in this video i demonstrated Car Audio Power Amplifier Repair - No Power ON / TL494 Not Working. this car sub-woofer amplifier have a TL494 based push-pull topology boost converter. it receives 12 volt from car battery and it takes remote ON command from car stereo car player. when power is applied, it was not powering ON, i demonstrated how to repair tl494 bases smps switch mode power supply. this subwoofer amplifier is used to increase bass / trebble and applies to the sub-woofer speakers

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