My 7210 projector prematurely shuts down after an indeterminate length of time. The green light is on (not blinking) and the fan is running, but the lamp just goes off. Sometimes it will work all evening and sometimes shuts down after less than 30 mins. The unit was sent back to the manufacturers in the Netherlands and it was returned stating that it was not faulting. They had cleaned dust out of the unit and downloaded a firmware upgrade. I have had it for just 18 months and the lamp hours are 1910. The unit will not even display its own logo or menu, it just goes out. If I switch it off and back on again, it usually works for a while, but you never know for how long. Is this a known problem or do you have any suggestions before I have no more hair to pull out. The dealership just doesn't want to know. Regards, Mike.
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if Lamp or projector shuts off after running a short period of time, This is usually a thermal issue caused by excessively high internal temperature. The high temperature could cause a component on the controller ECA or the power supply to fail when it gets hot. First you need to check the fan operation, Are 3 fans, two for lamp and one for the color wheel. Check the elevation foot, if something is broke maybe something stop the fan. Remove the lamp module. Examine the fan assembly through the recess in the bottom case. Plug the projector in and turn it on. Both fans in the fan assembly should start up and run for 5 - 10 seconds, then shut down (because there is no lamp installed). This is time enough to make sure the fans work properly. Make the same for the color wheel fan, you need to remove the top case.
when you changed the lamp, did you blow the dust out of the projector? if the screen on the side of the lamp is blocked (i.e. with dust), the lamp will blow quickly. if the projector were to overheat, by the fans not running or blocked vents, everything would shut down and the led would blink red.
it's not the lamp, it's the ballast. when it's fully discharged, it needs too much power to start. once it has the caps charged (when it's been running and warm), it'll start right away. it sounds as if the capacitors on the ballast are drying up. best to replace the ballast. after you do, make sure the projector is free of dust and dirt. excessive dust will cause premature power and lamp failure due to lack of cool down.