I dont have the frequent power surges from previous post so it is no help to me. other monitor works the one im currently using compaq crt 12" omg lol. any way when i turn the system on the benQ green light blinks on and off but no display even if i turn it off then back on, its not the gcard and it appears that there is power getting to the benq is it broke or a technical fault?? thanks for anyhelp that you can give.
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Monitor STFC (Self Test Feature Check) * Turn off the monitor * Plug the monitor power cord directly into the wall socket to remove any surge protectors or APCs from the troubleshooting equation * Unplug the monitor video cable from the back of the computer * Turn on the monitor * The floating dialog box should appear on screen against a black background. If the issue appears during the STFC, the monitor is defective. Get it replaced.
radioactivet, A qualified technician will need to investigate the units "switch-mode-power-supply" for typical "faults" and locate the faulty (bad) component(s) that ma be causing monitor to act this way. "Noise" on the +5 volt DC rail going to the vga/lcd interface (processor) may be why display is acting "strange" with uncalled for pop-up's appearing!! That's the very first place I would investigate when dealing with ANY COLD-CATHODE-FLUORESCENT-LAMP, BACK-LIT LCD DISPLAY. 12fixlouie
BenQ made a lot of monitors for Dell. You may want to look at Dell pictures. Most common failure in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply, 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 goes wrong: 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://www.badcaps.net http://en.wikipedia.org/wiki/Capacitor_plague
mnk1001, Possible Failure of internal "switch-mode-power-supply"/ "CCFL inverter supply" of E2200HD. Will need to investigate to see if SMPS is in emergency shutdown mode. Please post back if you find out root cause of failure. 12fixlouie
Disconnect the signal cable from CPU and power on.You should get a BenQ Blue screen.
If no Display,Problem is definitely monitor related ie monitor has a hardware defect most probably the power/invertor board has a few blown components.
If you are technically able,you can dismantle monitor and check components on the Invertor board which you may find on my other posts.
Please reply if you need more help.Please rate this solution.
If screen says "Signal cable not connected " all the time till power led switches to Amber chances are monitor is ok and problem is with graphic card or cpu.Connect to Known working CPU and confirm that monitor is the problem.
If same problem persists on another working cpu after changing signal cable,the interface board in the monitor could be defective.