20 Most Recent ViewSonic PJ556D DLP Projector Questions & Answers

My solution sounds dumb, I had the same issue. Took the lamp cover off the bottom. The screws were loose holding in the lamp. Maybe they heat and expand and eventually work their way out and the lamp doesn't make good contact. Just tightened mine up, the unit would power off after 45 minutes prior. Been on now for 5 hours, no trouble.

Check for dust on the lens. There may also be dust inside the projector on the mirrors, lenses, or LCD. If cleaning the lens on the outside doesn't resolve your problem, I would contact a professional to get the insides cleaned out.

Good Luck!

Typically a blinking light after boot up indicates faulty bulb or the circuit associated with it. If your air filter is dirty and clogged it could also mean high temperature warning. You have not mentioned which light is blinking.

Make sure that you got the screws that hold the lamp in tight. Sometimes if you don't get the screws tight, it will cause this problem

Hello, Greg.

The most common reasons are the temperature is too high or the ventilation holes are blocked.

Unplug the AC power cord, wait 5 or 10 minutes then turn back on.

There could be dust or the air filter needs to be changed.

Take the lamp cover off the bottom. It's possible that the screws holding the lamp are loose.

Hope this helps.

if the lamp shuts off and the projector still runs, it's a cool down mode, and will shut off when it reaches a low enough temp. if the lamp doesn't shut off and none of the keys work, the keypad may be faulty. or locked. some projectors have a keypad lock feature that makes it so only the remote can be used. check your manual for keypad lock/unlock.

Hi

Check the cables, try taking out lamp and put it back in. If all fails replace the lamp.

Hope this helps