BP96-01600A Samsung DLP TV Lamp Replacement. Projector Lamp Assembly with Osram Neolux Bulb Inside.

i install the tv lamp today at 4;00pm and doesnt work at all now i dont know what to do,or what i have to do /////oh yeha its not the first one that i install this is the third on the samsung tv and about the second one on a jvc tv how can i returned to the seller?