Projector shuts down after only a few minutes.

After somewhere between 10-30 mins of operation, the projector seems to turn itself off.

The projector will blank out and the red 'lamp' light blinks. The fan continues for about 30 seconds (which seems shorter than normal?) and when complete the orange 'Power' light goes on, indicating 'Stand-by' mode.

At this point, I can turn the projector on again and get another 10 minutes.

I have tried to clean out the unit - did I miss some important, easy to miss, vent?
I have just replaced the lamp, and though the image is brighter, this shut-off behaviour still occurs.

Is this temperature related?
Is this a problem with the projector itself?
Is my second lamp defective?

Thanks for any help you can offer.

1 more comment
kacheng Jan 21, 2008

I fiddled with the menu settings and turned the auto shut-off to zero.

I also reseated the lamp again.

One of these two things seems to have solved the problem for now...
kapoy Jul 04, 2008

My unit just shuts down after only 25 seconds of powering-up, any suggestions?
ramunch Oct 28, 2008

Projector starts in stand-by mode, i press the power button, fans run to full rpm and it sits there for about 30seconds to a minute without a picture, then fans shut off and lamp led blinks red.

The lamp should last 2000ish hours and this lamp has less than 200hours on it so i'm very hesitant to drop 300bucks on buying a new lamp, especially when others here have said it didn't fix the problem.

The solution says to get into the menus, I can't do that as I never get a picture.

Any other suggestions?

4 Answers

Anonymous

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Enter in Factory Menu
1. How to enter factory menu:
I. Hold press "UP" button until the "Lamp hours info." OSD display on bottom-right of screen.
Press keypad <Power> and <Blank> key simultaneously again, then enter Factory menu.
enter in fan menu and increse the speed of fans.
[email protected]

Posted on Jul 02, 2008

Anonymous

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I'm having the same problem. My Model is PB8253. Projector started, then afer a couple minutes it goes off with the red lamp led flashing.
Just replaced the lamp, but the problem persists. Tried to remove all connecting cables, except for the power, but still the same problem.
Anyone with similar problem or solution, please contact me at [email protected]

Posted on Jan 21, 2008

Bishoy Saweers

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Check the Heat Thermostat of the Lamp and clean it from any dust , and there s a small blower near the lamp , clean it also , and finally clean the cooling fans, it worked for me

Posted on Apr 02, 2014

Sunnyboy Jan 27, 2022

Where can I find the heat thermostat from BenQ projector
Sunnyboy Jan 27, 2022

My BenQ projector is giving me a headache,,wen I plug a laptop or PC it shutdown and wen I plug a DSTV dacorder is playing for few minutes the it shutdown n over heating.i plugged extra fan to boost for cooling it shows pictures for 40 minutes then shutdown.please help me to resolve this issues

Anonymous

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WHILE MY PROJECTOR WAS IN USE IT JUST SHUT DOWN,I THOUGHT IT WAS THE LAMP SO I REPLACED IT BUT AM STILL HAVING THE PROBLEM. I GET NO PICTURE AND THE RED LED LIGHT FLASHES. PLEASE HELP

Posted on Apr 28, 2008

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