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All Products > BenQ > T705 (Black, Silver) (Silver, Black) 17" LCD Monitor > Troubleshooting


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how to take apart, black screen, will not start, no display on monitor, monitor problem

BenQ T705 17

My ben t705 moniteur.... problem (by 7 users)

posted by sandman86 on Nov 22, 2007
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out of the blue my moniteur goes black... nothing on the screen..
i tryed starting it over but it wont... the green power light is still on but nothing on the screen... the cables are ok, the computer and drives are ok but this the screen is blanck would you please help me out please....

Comment by sandman86, posted on Nov 22, 2007

:S i've had this computer for about 2 - 4 years now ... and am not sure whats the problem with it... can someone please please help me out here...
the pc is working perfectly i could hear it and all but nothing on the screen
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6 Other Users Have The Same Problem

Comment by Guest, posted on Mar 08, 2008

similar problem as sandmans monitor worked fine one day turned it on screen on for 2 sec zap black.. have clean vid card disconnected cables etc still no screen any suggestions k man

Comment by Guest, posted on Mar 01, 2008

the same problem

Comment by ChrisH2O, posted on Jan 08, 2008

Hi,
I've the same problem this moment
exactly same as sandman describes.

Power (green light) still on.

Several attempts on / off and restarts didn't work out
Display shows about 2 seconds output and goes down again
All normal PC functions are displayed in that 2 seconds
Playing with the monitor buttons didn't work out

Is there any solution yet?

Chris W

Comment by itchy8me, posted on Dec 27, 2007

indeed i have the same problem with the benq t705. Dead backlight or driving hardware. when monitor is on and i shine a flashlight on it i can see some ooutput from the monitor. I have replaced a couple of caps because i thought they where dry (found this on this site somewhere aswell.) however this has not fixed the problem. Anyone have any other solutions. Is it possible that the tube itself is dead, after 1.5 years of use? What other electronic components is the backlight driver composed of?

thanks,
Wernher

Comment by Guest, posted on Dec 08, 2007

tomorrow I'll bring my monitor to service or change
i think Benq is garbage brand

Best Solution
posted on Dec 27, 2007
FixYa! (100)

Tweetee


Rank:Apprentice Apprentice
Rating: 100%, 2 votes
I have the same problem. I've had this monitor for about 2 years. The monitor was working fine, then black.
I'm not a computer tech, but I will try to fix it. Just wondering Tom, how to fix the blackligfht, and where to purchase this light?
Thanks in advance.

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Solution #2
posted on Mar 25, 2008
Helpful (85)

steverules


Rank:Apprentice Apprentice
Rating: 90%, 3 votes
it isn't the backlight. I took mine apart and found the power supply board to have 4 fried IC chips (discolored, brown). A bad backlight usually shows symptoms before it goes out ( half the screen is displayed, screen dims over time...) BenQ is just made with sh*tty parts and I found out the hard way because those theives to my cash for this garbage monitor. I'm sticking with the reputable brands from now on... Please be advised taking apart your monitor will void the 3 year warranty. BUYER BEWARE with shady brands like benQ....

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Solution #3
posted on Nov 23, 2007
Helpful (85)

tom19511


Rank:Wiz Wiz
Rating: 85%, 1522 votes
your monitor has a bad backlight.

Comment by tom19511, posted on Dec 01, 2007

That is a classic symptom of a bad LCD monitor.
If this solved your problem, please rerate this as a FIXYA
Rating Locked! (?) sandman86 has rated this solution as Helpful
Solution #4
posted on Mar 25, 2008
Not Rated (0)

ChrisH2O


Rank:Apprentice Apprentice
Rating: 0%, 0 votes
Hi all, solution for problem was givin'by BEN-Q support desk.
very simple, they replaced the bad 1, for a new 1.
(was in the garantee-period.)

regards Chris H2O

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6 Other Users Have The Same Problem - Continued

Comment by meri, posted on Nov 27, 2007

Friend of mine has a same problem.She start comp- monitor lamp is on,picture come for 2 sek,than monitor turn itself of.

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