While you wait for answers, we may have found some information which could help you.
Click here for Disc Tv Playpanasonic DMR-EX78 recover HD information?
How to mend Panasonic dvd player dmr ez49v?
how do i remove a disc?
md4020 voltage regulator?
How to fix F61 on Panasonic SC-PT750 DVD Home theatre Sound System?
Bit rate display removal?