I have a Sharp 32" LCD HDTV. Lately I have to unplug it and then replug the power cord to get the remote to function. Sometimes the remote will work for a couple cycles of on/off. But more often than not I have to unplug it and replug it to use the remote. Sometimes I leave it uplugged all night before I replug. It doesn't seem to make a difference. The batteries in the remote are new. Is this an easy fix? Thanks in advance.