Question about BenQ PB8250 Multimedia Projector

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Auto sync appears to not work properly

Trying to get the BenQ PB8250 to video sync with a computer at 1280 X 800 pixel output. Pressing the Auto button for > 3 sec doesn't bring up the described display with input and resolution, and does not change the projectors resolution. Is this resolution supported, and if so, is there a problem with the Auto sync circuit?

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The projector does not recognise a vista display res. Change the pc to the native res of the projector for best results

Posted on Jul 07, 2009

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Be sure that you have your computer set up to display dual moniters, google how to set up dual moniters on vista, or Xp, or which ever OS you have.

Posted on Jul 12, 2009

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jfpogie
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SOURCE: projector shutdown

your air filter of your projector is dirty, try cleaning it. tnx

Posted on Jan 30, 2008

  • 3422 Answers

SOURCE: BenQ PE7700

Hi,

Check if the unit has a Filter Timer ? If it does have one - check the hours on it and reset it.

If the problem still occurs or there is no filter timer in the Menu - check that all your fans are running.

Hope this is of help

Goodluck,
Please don't forget to rate the solution.

Posted on Apr 21, 2008

  • 1 Answer

SOURCE: Projector shuts down ca 20 sec from start.

I have the same problem, however, my lamp wasn't replaced. Projector working great, just started today. Filter cleaned, reset lamp time, neither helped. Any luck yet?

Posted on Dec 25, 2009

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1 Answer

Why do i have vertical lines on benq projector?


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SIR I HAVE BENQ MP770 WE NEED COLOR WHEEL AND FOR PB8250 WE NEED POWER SUPPLY BOARD HOW MUCH AND CAN I ORDER TO YOU SIR?


wE CAN SUPPLY COLORWHEEL OF BENQ MP770 IN INDIA
MUMBAI PL CONACT -M.R.Corporation Mumbao +91 22 23802513 ,mrtelcom@vsnl.com

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1) Turn off the BenQ power, before connecting your VGA cable to the Toshiba laptop.

2) Once your laptop recognises the BenQ unit, you then need to tell your laptop to send an output signal to the BenQ - you do this by pressing your 'screen output' button (this is usually one of the function keys and you may need to hold the key for 1sec). The output function key can choose either single VGA output, or both laptop screen + VGA output.


"If this has helped you, please rate this solution"

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Sep 22, 2009 | BenQ PB8250 Multimedia Projector

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Benq 8250 projector shuts down


Hi david115

I've had this problem MANY a time before and what BenQ does wrong is that they only replace the two main fans at the back of the PB8250 , they should in fact replace both the fans and the Mainboard. This is unfortunately the only way to get around this problem.

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Resolder the power transistors on inverter board and also check them.If display is not there at all some of this 4 transistors C5707 should be defective.Check associated fuse and Fet which drives the transistor.

Also check with Benq ,Normally offers three year warranty.

Samir

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