Hi, I don't have an answer for you but just yesterday my venerable Toshiba started something new. I'm used to all the bulb problems and the usual symptoms when the bulb is starting to go, but this was something different. It just died in the middle of a show. I got it running again (after it cycled several times to ignite the bulb, nothing unusual) and then it died again. And again. All told, about six times in half an hour. I've looked at the bulb and it looks fine, no extra dust or anything. I hesitate to replace it if this is not the problem.
Does anyone know if this is a 'ballast board' symptom or another wrinkle on the usual bulb replacement hassle?