My 50 inch panasonic lcd projection keeps going to a black screen then after a few seconds the picture comes back. The green light stays on but is flashing during this time. I have replaced the bulb twice now, the second time was only two weeks ago because they said i must have got a defective bulb. Does anyone have suggestions on what it might be

Check to insure that your input signal is clean,(clean picture) most modern TV`s blank the video if it is deemed of poor quality, also if you are using a VCR and are viewing pirate copy tapes the VCR will output a varying video level output signal to deter pirating of movies, using a video stabilizer between your VCR and your video input may solve this problem for you, check with your user manual as to the light flashing condition in the diagnostic section this will indicate the fault you are experiencing good luck