I remember I read somewhere else that there's an EPROM for this DVI. There's a round optical hole on top of the EPROM. When TV is on and light goes through the hole to EPROM, the EPROM will be ERASED. There used to be a lot of these kind of EPROMs for MCU. JVC will be your last resort to get it programmed or get a pre-programmed part.
What someone really should do is to take off the back cover while TV is powered off, and use something like black electrical tape to cover that hole up before powering up the TV again.
What someone really should do is to take off the back cover while TV is powered off, and use something like black electrical tape to cover that hole up before powering up the TV again.