Speaker has no power, no light, nothing.
If there is no sign of power at all, please check for sign of blowing fuse. Fuse typically locate near to power input.
Look for external fuse box that looks like these:
Or internal inline fuse holder (locate inside speaker backboard) like this:
Replace with same spec fuse. If your speaker keeps blowing new fuses, it might have a short circuit somewhere that would require a technician to diagnose.
