My roommate and I have an Optoma HD70 that we've been using for about 15 months. Recently, it developed magenta/green color flickering, so we took it apart and cleaned it following a walk-through we found online. Now that it's back together, the LEDs on the top light up, and pressing power gives the green LED like it would be turning on, but the lamp, fan, etc... don't turn on or make noise, or anything. If we let it sit for several minutes, the lamp light comes on. When we took it apart, we did disconnect all of the cables from the main board, but they're all back in and secure (we've double-checked). What could be the source of our now non-functional projector? We've put a new lamp in, and it doesn't work with either the new or old lamp.