Portable amplifier with mic & Speaker /Cube amplifier mp3 player Repairing /बैटरी काम नहीं कर रहा

Portable amplifier with Mic & speaker digital USB ,MP3 FM player with bluetooth Cube amplifier.2 in 1 power supply 12 volt dc and 220 volt AC power source repairing, fault finding and troubleshooting ,problem fixing Doston is portable amplifier with mic & speaker USB MP3 player with bluetooth Cube amplifier me ye battery se operate nahi ho raha hai is problem ko is video me solve karenge. #PortableAmplifierWithMicAndSpeakerRepairing #RechargeableAmplifierRepairing #UsbAmplifier #CubeAmplifierRepairing