SamyGO

Nothing. Are you sure, here isn`t the typo?
If you look at google, PN43D490 is real TV model, but if you look for PL model, you`ll find nothing serious.

PN is more realistic because Samsung uses such acronyms (PN/UN/LN for USA tv models).

It was duplicate of your post on samygo all extensions thread. Don`t flood here. Thanks.