I just got a refurbished Sony HW50 and face somewhat of similar problem in that the unit shuts off sporadically
(sometimes with 3 red lights which indicates bulb issue and sometimes just to a complete shut off)
My interactions with Sony customer support however have been excellent.
We have tried a few things to diagnose (increasing fan speed, removing the HDMI switcher so HDMI goes directly from source to the projector) but the problem remains. They think it is most...