samsung 72" dlp, picture goes out, audio plays. sometime 3 flash ligh

problem:

samsung 72 inch dlp model HL-S7178W

after an undetrimed amount of time, the tvs picture will go out and with that the audio stays on, within about 10 sec -1 minute the 3 flashing lights will go on the tv. the bulb has been replaced a bout 4 times with different grades of bulbs. the bulb usually stays on after the tvs picture goes out.

the tv for the most part always goes out watching cable tv or fast forwarding it happens on other media but not as frequent.

There is a phillips bulb in the tv now.

I have changed out the html cables and and tried both hdmi inputs as well

the tvs outage can start with in seconds or within hours it always varies. But once it start it can go out every minute. I give up come back another time. and its just a matter of time till it happens again

there are no distressing sounds that come from the tv