Every LED light I've ever repaired, one of the leads had come off the controller board. Every LED light I haven't been able to repair, one of the leads smoked a capacitor or resistor on the board.

I've had LiPo/Li-Ion cells go bad a couple of times, some are easily replaced, some not so much.

If it's newer, send it in. If you've had it for a couple of years, pop it open. Can't break it any more than it's already broke.