If it isn't something your familiar with then take it to a TV shop or anywhere that does component level repair. A local college may be a good place to start, you need a geek that sees it as a challenge.
I have more than 15 years expertise in repairing all kind of electronics, in that ecm there are 4 ic on the top side, the mcu and the prom on the bottom side and a bunch of diodes ( diodes are good ). That ecm took a reverse polarity main and this is all. Replacing all, one-by-one the ic it seems to be the only way but I do not know their type, their are masked by the manufacturer.
Other solution than sending me to a TV repair shop ?