On a ViewSonic PJ750 the "lamp" and "temp" lights both flash red in unison. The unit seems to work at least for the few minutes it was left running, but I'm afraid to leave it on too long if it if truly overheating. I can take the filter out and see that both intake fans as well as the fan on the bulb side are all spinning.
This is a sign of overheating, its a thermal issue, I solved the problem with some compressed air, but absolutely DO NOT blow in the ldc assembly or you will get dust in the lens system. You want to blow the cmpresed air on the electronics not ont he optics. I found that over time dust hair ect collected on the thermosistor and caused the over temp error. Cleaning it resolved the issue.
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Look at the manual page 34, for the indicator messages. I suspect it's the same problem I have (which I haven't had formally diagnosed yet!), which I believe is a defective fan. My projector had been making a really loud noise on startup, which varied in length and volume. Recently the projector has taken to turning itself off after being on for about a minute, and the power light flashes green, with the temp and lamp lights flashing red.
if the Lamp error and Temperature error lights are flashing red this means that there are two separate errors.
flashing lamp light means the lamp failed to ignite. It could be a lamp
driver problem or lamp failure. Replace the lamp to resolve the issue.
If the issue is not resolved, then service the projector.
A flashing Temperature light signals a fan error. Turn the projector
off and allow it to cool down. If the light is still flashing after the
projector is turned back on, service the projector.
projectors get a resistance reading from the bulb and if it doesnt get right value it will give you the double red lights
only other thing it could be is if the fans in projector are not turning on
call viewsonic and tell them issue and make them resolve issue
if unit is only 2 weeks old bring it back to store and get replacement or call viewsonic and get them to send you replacement unit - it is too new to mess with it yourself and take chance on voiding warranty
If power indicator light red and warning indicator red flashing than according to user manual :-
The projector has been cooled down enough and the temperature returns to normal. When turning ON the projector the WARNING indicator stops flashing. CHECK AND CLEAN THE AIR FILTER.
Experience:- 1. if the temperature is very low than temperature sensor maybe misbehave.
2. If anyone fan not working
so please you check fans.
(If lamp or lamp ballast unit faulty than after a time period the lamp indicator light ON not a warning indicator. I experience many times if any fan in projector are broken or jamed the temperature light if present otherwise warning light ON or flashing)
Other then POWER BUTTON light there are three lights more
1. lamp indicator
2. temperature indicator
3. computer input
witch one light is flashing RED or illuminated RED with POWER BUTTON orange light.
If LAMP INDICATOR light is illuminated RED than lamp runtime has reached 1800 hours. but projector still working.
If LAMP INDICATOR light flashing RED than lamp circuit failure, or abnormal function or lamp unit is damaged. In this case projector doing the same behave just like your projector.
if TEMPERATURE indicator illuminating RED the projector still projecting and if flashing RED than turned of itself
I have the same problem as posted too, ordered 3 new lamps and they all still do the same thing. I`m starting to think its the projector that has a problem. Anyone got a solution other then keep buying new lamps and try getting it to work... I mean, after 3, how bad lucky can you be that they are all bad lamps...
All you should need to do is go to the menu on the
projector, and find the Filter Timer. Hit the right arrow to select the filter
time, and then hold the rest button on the projector until you are prompted to
confirm the reset. Hit menu to confirm and it should now reset the filter
timer. Now cut the projector off and back on and the lights should stop
blinking. I hope this helps.
Purchased our76C in Jan, 2007. It is our second unit now that has had the same symptoms. When the unit starts up, the Power light is steady green as normal for a few minutes, but no image is projected. After a few minutes the lights do as you described. Both times Epson support authorized a new unit to be shipped out immediately. They said they had no known issues about it and didn't indicate what was causing the problem. Apparently it is not just the lamp wither. Also, the lamps both had under 20 hours on them.