Need Help KF42SX300 Ballast Power Supply

I  own  a nice KF-42SX300. After 2 years  the light engine has blown and the light bulb ,also.I change the lightbulb but for the balast circuit of the driver lamp  i didn*t find a schematics. I know how to work with SMD and hy voltage power supply but some components are fried and i cannot view the code of this parts . Maybe is someone who want to help me with this schematic. Sorry  for my english i*m italian. Thanks in advace.