Question about BenQ FP222Wa - Flat panel display - TFT - 22" - widescreen - 1680 x 1050 - 300 cd/m2 - 700:1 - 5 ms ... LCD Monitor
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Posted on Jan 02, 2017
Ive worked on a few monitors since then. From what I remember, one side of the foil needs to be removed. Under this foil are 4 plugs for the back lights. Mark them before you remove them so you know which way to put them back. Also unplug cable from board that comes from the front buttons. Remove 4 screws on side of screen. This will remove the steel housing that the circuit boards are mounted on. ***** Make sure you wear an earth strap or static electricity will fry the boards. If you dont have an earth strap, try to work on the monitor in a static free environment. eg on a steel table that has been earthed, and dont wear nylon clothing. There should be 2 circuit boards that will need all the screws removed to pull both out at the same time. The "PF" will be on the reverse side of the board or the "component side". There is a ceramic fuse (white), but this will not be the problem if you can see the screen with a torch. To find the fuse I spoke about, please see my previous listing.
All the best,
Posted on Feb 07, 2008
SOURCE: Benq 17"Lcd monitor fault
Resolder the power transistors on inverter board and also check them.If display is not there at all some of this 4 transistors C5707 should be defective.Check associated fuse and Fet which drives the transistor.
Also check with Benq ,Normally offers three year warranty.
Posted on Mar 24, 2008
Had the compete dark screen problem. Green/amber power light was coming on and off as expected but no image would appear on the screen.
Found PF751 to be open.
Thnaks for the help people.
Posted on Oct 08, 2008
Possibly either the backlight lamp or its associated power supply has failed.
Power buttons (mostly LEDs) have constant availability of low voltage (for some other circuits too) otherwise they wouldn't 'wake up' on command from a computer as some do.
The blackout could also be due to a failed main power supply so the incoming video is no longer being processed.
Posted on Nov 01, 2008
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Memory / Constant 12V(+)
Switch / Accessory
Left Front (+)
Left Front (-)
Right Front (+)
Right Front (-) Grey/Black Grey/Black
Left Rear (+)
Left Rear (-)
Right Rear (+)
Right Rear (-)
You can connect the illumination wire Orange/white with the red wire.
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