Question about BenQ Computers & Internet
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Posted on Jan 02, 2017
SOURCE: BenQ LCD 17 inch Monitor
I wonder if this has a backlight in it. Most/or all LCD flatpanel displays use a backlight in them, namely a small florescent tube (a tiny version of the office florescent lights). If this is burn't out, or the little power supply which runs it dead, you will have a black display. The image is actually there, you just can't see it, except perhaps faintly when external light hits it just right. The display must be disassembled to check this light. If you have tech savvy, and some equipment, voltmeter, maybe an oscilloscope, you could check it out. Where to get a replacement lamp? Google it... perhaps the manufacturer.
Posted on Sep 17, 2007
Its a problem with the inverter. check the 4 transistors, C5707 near the connectors for the backlight. If none are defective, look for the PF751 FUSE. It sure to be busted.You can replace that with another 3A fuse. Remember, you should only replace the fuse if you are certain there are no busted transistors in the inverter board. Otherwise, you now have a refurbished Benq Monitor
Posted on Jan 07, 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
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