Question about BenQ PB7210 Multimedia Projector
Depending on the problem with the individual fan--either it physically is not turning or it's not putting out a computer signal. Red is positive, black is negative(ground), and yellow is for the computer pulse--it tells the main board that the fan is turning. I've never been totally successful in repairing a fan for a projector. If it died due to heat expansion, (i.e, the motor binds and stops) you can't repair it. Sometimes, if the computer signal is gone, you can open up the motor and replace a bad component--remember, those fans operate in a HOT environment--better to try to find a replacement on the net. Look up Rotron (big manufacturer) and some laptop repair places--they can sometimes point you to sources of different size fans. I've found that in most cases, the fans were manufactured specifically for the projector company and you'll have to find one that is close enough in size and modify it to fit.---Rick
Posted on Sep 07, 2009
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Posted on Jan 02, 2017
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The main device responsible for maintaining a constant temperature of your video card is the fan present in the processor. If this isn't functioning efficiently it's quite obvious that it would result in your video card overheating. If you don't regularly clean your computer, it could be highly likely that your fan is clogged with dust.
This is one of the simplest causes of your video card overheating which can be fixed by simply cleaning your fan, preferably using a blower.
A follow up of the previous point, in some cases your fan maybe malfunctioning or stopped working altogether. This could simply be diagnosed by switching on your computer with its cover open and checking if the fan is functioning. If it doesn't happen to be working, you have your answer.
Pushing your CPU to its limits by overclocking can cause your video card to overheat. This can seem fairly obvious too as if you find your video card overheating and if you've recently overclocked your CPU, it would explain it.
This is a rare cause, but depending on your video card's brand a badly developed driver could also cause your video card to overheat. If you use an unusual video card with questionable reputation this could be the issue.
While your fan maybe perfectly in tact and working, the location of your fan also matters. If there isn't sufficient air flow to your video card it can also cause it to overheat.
Those are typically the 5 main reasons to your video card overheating. If you have any other points in your mind, feel free to share them below.
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