JVC does this as well, and I don't understand the rationale behind it.
They are afraid someone is going to hack into this (why I have no
idea), but the hacker won't be able to disable the interlock???????

If enough consumers get porked from this (one of my customers cleaned
his JVC projo and lost the DVI input function), a class action lawsuit
may stop this practice. Perhaps a letter sent from your lawyer to
Pioneer might elicit a response from them.

John

BTW, why DID you open your plasma?