If the problem you are having is that the television's operation lock out for the buttons on the tv has been enabled then the only way to undo that is with the Sharp remote control. The only work around I can think of is to perform an INIT, which is a factory reset. I do not know is Sharp customer service will still walk you through that over the phone because it is a detailed and dangerous (in that it can wipe the memory of your television if done improperly) process. I do not know what type of Sharp you have i.e. aquos or non aquos. 800-BESHARP is the number for non aquos support and 877-332-7867 is the number for aquos support (open 24 hours for aquos support last I checked)---32 inch and over aquos that is.
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