Solved! I have that same issue also the picture cuts in and out...I'm thinking thr

[patsyann2751]

You turn on my WD-73840...it comes on and then there's a pop and the set shuts off, it will come on after a few start up tries...also the picture cuts in and out...thank you for your support "its so expensive to have someone come out for a ?simple? fix...like a dirty fan?

 

[hang-the-9]

That does not sound like it's overheating. Probably a bad capacitor on a board. If you suspect a dirty fan, did you actually look?