Samsung service it's shit, and so are their products.
while the give the image of being better quality their products are built of cheap things that break in a month.
by experience my LCD only lasted a month, and they had to repair it, after repairs it still not picking channels like it should. and they don't want to exchange it.
sony it's offering 4 year warranty in my country for their LCDS not because they had huge problems but because they trust their products.
we had a sony for a while on the living room and still working a year after without a problem.