Hi, if i press the power button to turn on the screen, for a split second the benq symble appears, then black. I have pulled apart the screen. it seems there are 3 faulty parts,printed beside these parts on the circuit board are the folowing C826, Q805, and PF801. I have taken the board to a local electronis shop and they don't have these parts, where can i get them and will they fix my problem once they are replaced. Thank you
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Re: screen has power but is black
Looks like many faukty parts on the inverter board.. replacing will not be of much help as it will soon start get troublesome once again. I would suggest that replacing the LCD inverter board is a smarter solution. Hope this helps! Good Luck!
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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.
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
I believe the power led button is still on while the screen goes black, if yes, it means the picture board of your monitor is bad that is why it appears for a second and goes black after that
Since the power led button is on, It means the picture
board on your monitor is faulty that is why it appears for a second and goes black.
The best thing for you to do now is to take the monitor to
a local repairer or any service center within your vicinity to help
with the replacement of the picture board because the fault is not
something you can fix yourself in other to complicate issues.
We have a dis-assebly and repair guide posted on our web site at: www.ccl-la.com/monitor_repair.htm The problem is usually the driver transistors, our guide shows where they are and what to replace to get your monitor back running again.
How old is the computer? Make sure that the power light comes onto the monitor when you plug it in, should be orange and then turn green when video card syncs with it when PC is turned on. If you are getting black screen when PC is powered on:
1. Bad video card
2. Bad video cable
3. Bad monitor
1Solution: Try using a different monitor attached to this same PC and see if it works. If it does, then its the monitor, its cable, or its power supply. If it doesn't work, then its the video card or the video cable coming from monitor.
Explicit enough to see that's this a a repair shop job. That also probably means a replacement- cost of which will not be much more than repair prices.
One thing how ever- the power supply[which would appear to be the problem] is this built into the screen [that is does the screen have mains power direct? Or is it powered from an external 'Power Brick'
If it is of the Power Brick type - then a new power supply is the answer - get on of the stabilized universal type with a fistful of connectors and a voltage selector switch.