So at this point the entire back has to come off the tv. Probably need to blow it out real good with compressed air. Then inspect all the boards/wires for anything that looks burnt.
If you don't see anything visual then you will need to tape down the lamp door switch and plug in the tv power cord. Observe and listen as the tv tries to power on. There should be clicking, buzzing, fans, etc. then the lamp should fire up.
If any of that is not happening, the real hard part comes where you have to test voltages while the tv is trying to turn on. This gets complex, not something that we can teach you and I suggest you use a local repair shop, which I can help with also.
I hope the answer I provided so far satisfactory. If you do need more help or don't understand something use the REPLY option.
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