Question about BenQ FP71E 17" LCD Monitor

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Monitor fails during use

The monitor fails during use, timing is straight away to 5-6 hours after switched on. When it is about to fail the display goes darker and then it goes to black. Then it must be left for a while before it will work again. Please help

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Re: Monitor fails during use

Hi, From your description/post, it would seem that something is overheating in your monitor. It is possible to be a cold solder joint or a component starting to fail. Since this involves component level repair, use of a VOM and a soldering iron, it sort of limits a do-it-yourself repair not unless you are comfortable working in such an environment and with such tools and equipment. A sure sign of cold solder though is if when it is jarred it turns itself on. The "growing darker" possibly indicates backlight fading. You may need the services of a qualified professional to have this repaired. Good luck and kind regards. Pls post again should you need further information.

Posted on Aug 07, 2007

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Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply (they should be replaced in a set), blown fuses; poor solder joints, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed monitors to get some ideas what to look for:
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Basic LCD monitor and TV troubleshooting guide:
Failed TV and Monitors pictures:

Learn about bad caps:

Capacitors kit: he can make you a set of caps for you.
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