Works fine. No hassle returns. Works in these models:
Samsung
PN51E440A2FXZA TD02
PN51E450A1FXZA SD01
PN51E450A1FXZA TD02
PN51E450A1FXZA TS04
PN51E490B4FXZA TD02
PN51E490B4FXZA TS04