Question about BenQ FP731 - 17" LCD Monitor

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My benq monitor worked for a couple of years then one day it just stopped. FP731 17". I get the green power light but nothing on the screen. Hooked up a different monitor to the computer and it works fine. Tried the Benq on another computer, but same problem.

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It is almost the same as DELL monitor (BenQ makes monitors for Dell and HP), so look for shorted transistors, cold solder joint, fuse.
If you are going to DIY and have proper tools and know safety precaution then please read on:
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 DELL monitors to get some ideas what to look for: http://s807.photobucket.com/home/budm/allalbums
Post back what you see inside so we can guide you further and it will help out other people in the future also.
http://en.wikipedia.org/wiki/Capacitor_plague
Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.

Posted on Sep 13, 2010

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