Samsung DLP. No Picture, & No Sound.

Hi. I have a Samsung DLP 56" tv, Model # HL-T5076SX/XAA. Serial # AHFM3CKDB00613W Version PH01. My television turns on, I hear the melody sound. When it is turned on, I hear one click, the lamp is on, both fans are running, but no picture and no sound. Front panel green light flashes anywhere between 12 to 16 times, each time the tv is turned on. I've had this problem for about 4 days now, haven't been able to watch tv. We were told by a repairman that the only possible problem could be the 'color wheel'. We bought and replaced the color wheel, it did nothing. I remember our television was on recall for the little white dots, and Samsung gladly fixed it, no charge. They replaced the reflective mirror that transfers the light from the lamp to the screen. There's a black cap on the back of the tv, I can see the light on, but it's not being reflected up onto the screen. What's wrong? I checked capacitors, they don't have a bulge and none are popped open. All connectors are in correct order. Is it the DMD or Digital Board that many have been speaking of? I'm trying to fix this without having to pay a service technician to fix it for me. Thanks!