Television and Home Theater

I have a sony wega trinitron, model KV-32FV15.It takes a while to power on, and when it does, the picture flashes on and off - about a second on, and the one second black screen. This problem started about 2 to 3 weeks ago with just a longer power on process, then the picture flashing on and off a few times until today, when it does it all the time. Can anyone give me a clue to what could be wrong and what parts I would need replaced?

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.

Ok here is the deal. I have a couple of problems I am hopeing I can get some help with. I have a KP-51WS500 television that after it warms up (approximately 15 minutes from initial turn on) the screen goes very red. I am wondering if anyone has had this problem and what the possible fix might be. The other problem that I have is when I go to autoset the convergence it does it's thing but nothing changes and when the screen goes dark you can see the red, blue, and green lines curving across the screen.