No picture and No sound

If you sure with the problem, try to get the part nunber from the service or the costumer service.
Try to find that part on the net, or a service who repear inverters.
I have a problem like this with my laptop, I bought a part from ebay, and I also have a service phone nunber to fix that inverter localy.

Just get the part nunber and use gogle!

I have the same problem here with my Philips 30PF9946/37

I'm not sure this can be diagnosed as an inverter failure, unless there is a another inverter board in there I'm not aware of. The only inverter I found (actually two) in this unit is the pair of KLS300A1 inverters which drive the CCFL tubes.

Since I personally get a green power and light AND the CCFL backlight comes on, it seems unlikely that the inverters have failed.

Would love to hear from anyone who can ident the failure in these units - there's certainly a LOT of these around that have failed in exactly the same way.