“My RGB Lights on the side suddenly stopped working. I tried unplugging and plugging back in the USB-C port but it won't light up again. I've left the Cord plugged in overnight a few times. Is that the reason why? If so how can I fix it?”
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We'd like to work with you directly so we could do some troubleshooting with your JBL Quantum 400. Please contact our Customer support at https://support.jbl.com/us/en/
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