Hissing sound after power surge?

I have a Symphonic 32" LCD HDTV, Model # WF37L6

Recently we had a power surge and I quickly snapped the main breaker off in my fuse box. My Microwave and another TV were destroyed but everything else is fine, except my HD TV.

Now when I turn it on, there is a very audible 'hissing' sound, kind of like what crickets chirping constantly would sound like if listened to from far away. The sound is coming from the middle of the TV, on the back. The rest of the TV works just fine. No picture difference, nothing else out of the ordinary.

I read a topic about another TV that had the same problem, but it was standard TV so I didn't know if the solution would work for this TV. The person had said that it was a soldered joint that had got burnt and would be fixed if cleaned and resoldered. I am hesitant to take the case off my HD TV before I even know if that could also be the problem.

I'd rather try to fix it for less than buy a new TV. The warranty is lone gone, so I have little recourse short of claiming it on renter's insurance, which the deductible is $250.