Question about ViewSonic PJ750 Multimedia Projector

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Red lights flashing on ViewSonic PJ750

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.

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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.

Posted on Mar 01, 2009

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Benq w1000 project not turning on


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.

Jan 27, 2012 | BenQ W10000 Projector

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Red power, blinking red temp


Hi,

if the Lamp error and Temperature error lights are flashing red this means that there are two separate errors.

  • A 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.
Goodluck..

Feb 25, 2008 | Hitachi CP-X250 Multimedia Projector

1 Answer

I turn on my Viewsonic PJD6251 but the lamp does not come on, and after a few seconds I get 2 red lights TEMP and LAMP. It is new, only 2 weeks I barely used. Good care.


sounds like a bad bulb

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

or

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

Mar 24, 2011 | ViewSonic PJD6251 Projector

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Power indicator /red/ and warning led/red/ are lighting after ea 15 sec. a lamp never start and fans goes in OFF mode. I checked power supply lines S5V,S-5V,S16V on the Main Board . I checked unit lamp...


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)

Jan 20, 2011 | Sanyo PLV-Z4 Multimedia Projectors

1 Answer

After changing the bulb image will not come on and solid orange light appears


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

Jan 11, 2011 | Panasonic PT-LB50U Multimedia Projector

1 Answer

The lamp continues to flash red lights for power and lamp


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...

Dec 04, 2008 | ViewSonic PJ500 Multimedia Projector

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Both Temp and Lamp lights blink red


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.



May 23, 2008 | ViewSonic PJ551 Multimedia Projector

1 Answer

Projector lamp flashes and the temp red led lights.


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.

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