Macbook Pro Display Problem

[djv1967]

I have a 2007 MBP3,1 A1226 15.4" LED on OSX Lion, Snow and Windows 7.
While watching a HD movie on an Epson projector the picture went blank and the laptop was overheated.
Pressing F7 did not recover the picture internally or externally, so I forced shutdown until the laptop was cooled down.
Later when I turned it on the internal display was OK for a while and then it started flashing until it died.
Connecting an external monitor was the only working solution.

I tried resetting PRAM/NVRAM no luck.
The test with the torch behind the apple logo shows no faint image.

External monitors work, but since the internal display died:
a. there is no monitor detection so I have to select a predefined resolution
b. it works only with DVI-I cable, and not with DVI-D anymore.

Can you figure out what needs to be replaced:
1. LCD panel
2. LED driver board
3. Logic board
4. Repair the graphics card

Any suggestions?

 

[Detrius]

Based on the detail that both internal and external video went out initially, I'm inclined to think it's the logic board issue common amongst the 2.2/2.4GHz models of 2007. I wouldn't expect external video to work at all, so that's a little strange. Anything at all related to the internal display would not have caused issues with the external.