Question about BenQ FP767 17" LCD Monitor

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Display POWER LIGHT IS ON BUT NO DISPLAY ..

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  • angel rodriguez Jun 07, 2008

    I HAVE A BENQ FP767. WHEN I TURN IT ON I GET A GREEN LIGHT BUT IT TURNS ON AND OFF. I READ ON THE BOARDS TO TEST transistors 2SC5707 AND FUSE. HOW DO YOU TEST THEM AND WHAT ARE THE SPECIFICATIONS FOR THEM SO I WOULD KNOW WHICH ONE IS GOOS OR BAD. THANK YOU

  • angel rodriguez May 11, 2010

    WHERE CAN I GO OR WHAT WEBSITE CAN I GO TO SO I CAN PURCHASE THE transistors 2SC5707. HAVING A LITTLE TROUBLE TRYING TO FIND IT ONLINE. THANK YOU

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Problem is with invertor board.You need to open the monitor and check Invertor transistors 2sc5707.Test all 4 transistors and replace defective,also check /resolder associated circuitry.Also check fuse with PFxxx circuit reference no.
Samir

Posted on May 12, 2008

Testimonial: "good one!exactly ringt"

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If I understand correctly, you have Sylvania 170 timer and the display doesn't light up.
If you have different problem, add a comment.

A) If this is existing installation and timer display worked correctly before, then it sounds like timer malfunctioned or power to timer is interrupted. Check breaker, and then pull out timer and test for power.

B) If this is new installation, then 2 possible things:
1) Timer defective: exchange for new one.
2) Timer not wired correctly.

Review wiring:
Timer replaces single pole switch.
Single pole switch has two wires
Timer has 3 wires: Blue Black White
Timer has additional wire to run internal clock and to light up display.
If timer not wired correctly, then display will not light up.

Here is correct wiring:
a) Two wires from switch.
b) Connect timer-blue wire to one of the switch wires. Choose either one for now. You will have to choose other wire if display doesn't light up.
c) Connect timer-black wire to other switch wire.
d) Timer-white wire does NOT connect to either switch wire. Look in back of electric box. There are white wires twisted together and covered with wire nut. These are neutral wires. Connect timer-white wire to neutral wires. This will power the clock and display.
e) If your box does not have the white wires described in d), then connect timer-white wire to bare ground wire.
f) Turn power ON. Does display light up?
g) If display lights up, switch is wired correctly.
h) If display does not light up, then reverse timer-blue wire and timer-black wire shown in step b) and c).

geno_3245_129.jpg

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Turning the Display On and Off
There is a power switch on the bottom of the display and a power button on top. The power
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http://www.retrevo.com/search/v2/jsp/mytrevo/myTrevo.jsp?page=man

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Display modes
Fn + This hot key cycles through the power-on
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The display modes are:
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monitor simultaneously
❖ External monitor only
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video device simultaneously
❖ External video device only

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