I Just had my old shitty battery replaced with a new one and the first battery they put in they said was dead so they tried another. The 2nd one worked but died and they checked the terminals( they weren't on tight enough) so now it works fine. But now all my audio setting were lost on the head unit and my left speaker( BA SL80, not overpowered) has a clapping sound when i turn the volume up.
Is the speaker blown for some reason?
Could something shorted or got fuked up? please help!
