Loud pop, black screen sound ok.

I have a Z50PX2D.

Same thing as the others... loud pop.. black screen...

How to know which board is defective...

Here is what I've done :

Took the voltage on the ysus board.. and got 5v...60V and 195v... are those ok...?

Then checked at the z-sus because I heard a little click... so remove the z-sus and saw like burn spot under one of the big IC...

So now I got a tv with black picture.. no more loud pop.. but sound is ok...

should I go ahead and replace the z-sus? or other parts may blow this new one...?

As for the revision I think that the last letter is the version : like my ysus board is 6870QYC004C and the zsus is 6870QZC004A... would it be better to have a zsus with rev C? could this prevent for future failure?

Thanks a lot for any help :)



Thanks