Insignia PCB getting overheated producing broken low quality audio.

Disconnected the battery but still the pcb over heats and the audio is completely broken and is of low , poor quality. no issue with the bluetooth connectivity though.

Not sure what has to be done next ? is this repairable of should this be discarded.

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Has anything happened to it recently? drops, water damage, repairs?

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No drops and damages but was kept connected to usb for charging... Always though my dell monitor. I was using it as a desktop speaker. Rarely it was taken out of charging... Could this be an issue ?? Something got burnt on the pcb? Though I do not see any damages, burns on the pcb.

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