Hi Kev,
Obviously a Vestel set - Tosh use them for their cheapies. Not yet met a 17MB70-5P, but expect to soon.
Guess it's an Eeprom problem, but don't yet have the bin.
Fleabay is the best bet for screen smash boards.
Good luck - Chris.
Further thought - Make sure main panel relates to screen size and screen maker as there are often many variations.