What does it mean when my jvc home stereo says protect when it turns on? Try to disconnect all of the speakers and then turn on the unit. Want Answer 0 Clicking this will make more experts see the question and we will remind you when it gets answered. Reinstall faceplate and turn the unit on Your head unit should now power with factory defaults. This device will turn on for 3 to 4 seconds then flashes "protect" and shuts off.
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