We have what we thought was the same problem with our JVC GR-D30U. We actually tested our battery, however, and it is fully charged. The problem seems to be that the Camcorder won't take the power from the battery. It works fine when plugged in. I called JVC service center and they said we need to send it in to the nearest service center who will give us an estimate on the charges to fix it. The phone number to call is 1-800-252-5722, option 3 to get the service center closest to you. We don't have any other info because we have yet to send it in. We'll update if we find anything else out.
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