Having problems with your BenQ FP731 17" LCD Monitor ?
I have a lcd monitor the monitor powers on,but it shows blank screen,please i need a solution.
Mikezee4real. These types of monitors are notorious for having their Switch-Mode-Power-Supplys fail. (all brands) and /or what is called an INVERTER Circuit fail. It gets DC from SMPS and makes AC voltage to power up the 2 Cold Cathode Fluorescent tubes that provide backlighting so you can SEE what is on your screen. Get back to me if you want to pursue this issue further with more info that you might use to bring life back to your lcd. One thing you can try is the flashlight trick. If you have a known good windows screen showing on PC, connect and then power up the lcd. If SMPS is not totally dead, still supplies 5v to the logic interface board in your monitor, shining a bright light onto the screen will reveal a very faint image of the windows desktop. Get back to me with what you see or don't see. I'm louie12fix on fixya or lmistyrel @ aol.com
If you shine a light at it and you can see the desktop, it means that the backlighting is not functioning correctly. This could be due to a number of things. The flourescent ballast could be bad, the bulb could be bad, or the power supply for the monitor could be bad. Either way, if you dont know how to open up electronics and troubleshoot what is bad, you are looking at getting a new monitor. They are cheap enough nowadays that it doesnt make sense to repair them. Otherwise, if you are comfortable with a soldering iron...i've come across a few that needed only a couple of capacitors replaced for them to start working again.
Repair Help & Product Troubleshooting for BenQ FP731 17" LCD Monitor
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