I have a SONY KF-WE50 rear projection tv, a few weeks ago it started to turn the pic and sound off while the green light was flashing around 30 times. After the light finished flashing both the picture and sound came back. It repeated this 1-3 times just after turning the tv on. We continued to use it as is and now the both pic and sound turns compleately off and a red light is flashing at the front. Non will come back again. If I plug it out (as this is the only option to turn it off) and leave it for a few minutes, it works fine again (appart from the green signaling part). Any idea what the green and also the red flashing means?