BenQ lcb monitor

You must find and replace some damaged electrolyte capacitor in your monitor

Someone would have to open the unit and see if fuse bad or even puffed up caps in the power supply for it.

More than likely a manufacture defect. If it is not that old; I suggest contacting the manufacturer to get it replaced. Most LCD"s have 1 year warranty, and it's certainly, not weird to see 3 years.

3 years old and generally rated as a Mediocre monitor to begin with, I'd say I'd invest in a new monitor

Here are some replacement options:

http://www.newegg.com/Product/ProductList.aspx?Submit=ENE&N=2010190020%201309821311%204017&name=%24100%20-%20%24200

I have exactly the same problem with my Benq FP71E+ ..

What i found is a temp fix is this :

When monitor dims and goes black i turn it off , hit the bottom left side (near the BENQ logo) turn it on again and it works ..

This works every time for me . But after a while it switches off again , could be 5 minutes could be 5 hours . Its random

I've repaired my FP767 just today. It had similar problem.
First of all I thought that I needed to replace CCFL tubes.
Then I noticed inflated capacitors in power supply.
I replaced them all and monitor works as new.

Problem with Inverter circuit.
Check with BenQ They offer a 3 year warranty.
Samir

This is called burn-in mode. Used to test the monitor at the factory.
To fix this, use the buttons under the front of the monitor,
There are six buttons. Let's number them 1 to 6 from the left.
Press 6 to display menu (at the bottom in Red will say Burn in mode on)
Press 4 or 5 until Recall is highlighted
Press 6 to select
Press 4 or 5 until Recall All is highlighted
Press 6 to select
Press 4 or 5 until Yes is highlighted
Press 6 to select
Press 3 to exit
This will reset all paramaters and also turn-off burn-in mode
If you want to reset some parameters to your preferences, press 6 again to bring up menu and
see you user guide to get explanations for the different settings.

Try sending monitor back as most Benq monitors come with at least a two years silver warranty. Benq are very helpful and their repairers are quick and polite. You will find their no.s on their website www.benq.com my monitor was experiencing the same and for $10 postage and a one week wait is repaired and working fine.