Help with main board identification

[jimbofz]

hi ,trying to identify main board type 303c4201073  used in tevion lcd 42031d .
i assume this chassis will have been used in other brands,
if someone can help i maybe can crossreference and find out how to enter s mode,
this one has solarisation but menus are clear so i suspect eeprom corrupted,
also the main board has a red led flashing when tv is on ,
curious what its used for,
 does it blink only when there is a fault ?
 or ,like a modem, blink when in use?
any thaughts please