Television and Home Theater

hi i just got a panasonic pt-40lc12  projection tv. i brought it home and plugged it in and all it does is flash a green light continuoudly,can anyone help me this

Hello,

 Please forgive my lack of tech savviness, but I believe this is a very unique problem. I have a Samsung large flat tv with built in speakers, no fancy sound setup. Everything was working fine until this morning when I muted my program to answer a phone call. I unmuted it and ever since then there has been no sound! I changed channels, turned the TV on and off several times, but nothing. The volume indicates that there is sound, but nothing. I never messed with the cables or anything and I am completely stumped as to what could be going on. 

Thanks for the many doc's on the blinking green light solution for the Mitsubishi TV's.  I have essentially completed all the steps for removal of the electrical chassis but am running in to a problem.