boAt Stone 1000 Circuit Details, Amplifier IC & Repair Guide

boAt Stone 1000 circuit details, ft2920P amplifier IC, 4056A charging IC, Bluetooth module and practical PCB repair guide explained clearly.
boAt Stone 1000 Circuit Details, Amplifier IC & Repair Guide
boAt Stone 1000 Circuit Overview. The boAt Stone 1000 is a portable Bluetooth speaker built around a compact audio circuit that combines wireless audio reception, wired AUX input, audio amplification, battery charging, control switches, and speaker output on a single PCB. The reported motherboard reference for this unit is BK_M33_BT_v2 . According to the supplied board information, the speaker uses a ZT-4390E5 Bluetooth module , ft2920P audio amplifier IC , PT2308-S headphone driver IC , 4056A charging IC , and additional transistor-based switching and signal-control stages. The circuit is easier to understand when it is divided into four sections: the Bluetooth and audio input section , audio amplification section , power and charging section , and user-control section . Because component markings and battery ratings can vary between revisions, the values printed on the actual PCB and battery should always be treated as the final reference during repair. boAt Stone 1000 Basic Specifications. The su…