Having problems with your BenQ Computer Monitors ?
Monitor turns black after 3 seconds
\015 I've been using my monitor Benq T906 without problems for a couple of years. The monitor is connected to a portable PC. Since a few days, as I switch on the monitor I can see the image I have on my PC but after approx two-three seconds the screen turns black. The 'power up' led on the monitro remains green.It looks like a hardware problem.I replaced the video cable and the power cable but no change.I've aready opened up the monitor but couldn't identify anything damaged/burn visually.Note that the monitor didn't fall or got hit, it just started turning black after 3 seconds power up. During the 3 seconds I can see the image.If I open the monitor, is there any specific component I can investigate for failure? Thanks in advance for the assistance\015
Teo6925, "Switch-mode-power-supply" is in partial shutdown mode. Can you see any electrolytic filter capacitors that have a slight "swelling" to their tops? They should be flat!! You may also need to inspect all the soldered component connections very closely for cold, thermally intermittant, "frosty" looking solder joint connections. May need large magnifying glass or 10x to 20x inspection microscope to locate these thermal/vibration "fractures" and then resolder them! If you have a capacitor problem, then you will need to carefully remove and replace with new ones. If you are novice at soldering I suggest that you document your work with digital camera or video tape so you can get everything back together with no "leftover" pieces! Teo, all you need to do to find out how BAD the problem of poorly manufactured capacitors is would be to search WEB for BAD CAPACITORS!!! Look for pic's of ELITE capacitors or CAPXON brand. You will be stunned beyond belief!!! Reading is free!! READ, READ, READ. Let us know what you find and do additional comment here on FIXYA. 12fixlouie
Repair Help & Product Troubleshooting for BenQ Computer Monitors
Tips for a great answer:- Provide details, support with references or personal experience .
- If you need clarification, ask it in the comment box .
- It's 100% free, no registration required.
Suggested Questions/Answers :
Monitor sleeps after one second
... AcerView F51 15 in. Flat Panel LCD Monitor
Monitor black screen
I experienced a similar problem with my MAG LT776s. As a "band-aid" fix, I have found that if I turn the monitor brightness to near zero my problem is minimized. Meaning - the monitor goes on after a little wait (~ 20 sec) and will stay on. ... Mag Innovision LT776s 17" LCD Monitor
Monitor goes blank less than a second after turning on.
I start my computer and turn it on, and everything looks fine for about 1/4 of a second and then it goes black while leaving the power light green. I can only see the screen again after turning it off and on, but that's only for another 1/4 second. W ... Rosewill R700J 17" Flat Panel LCD Monitor
Gateway monitor FPD1975W won't display
Same problem - unplug both computer and monitor - hold power button for monitor for 15-30 seconds...then power it back on and then power on the computer. Seems from other sites there is a power issue with the monitor - this worked for me. ... Gateway FPD1975W 19" LCD Monitor
Monitor goes blank less than a second after turning on.
Sounds like either there is a bad connection from the computer to the monitor, or the monitor has a faulty power regulator, causing the monitor to overheat prematurely, and shut off. ... Proview PL926WBi 19" LCD Monitor
Monitor black with green light on
Did you changed frequency of that monitor? if it is out of factory setting that could be the problem, try to connect it again as secondary and set Hz to default, if that does n't work try same settings on both monitors? i have connected two monitors ... PC Desktops
Monitor going black
My HP f1703 is almost 3 years old and started having this same problem. My fix got the display to stay on. Don't know how long this fix will work. I set the monitor brightness to 51 and contrast to 41. You may have to adjust to your levels to your ap ... HP Pavilion F1703 17" LCD Monitor
AG Neovo X-17a
Hello,It sounds like you have a monitor with a common problem. After a few years some LCD monitors\015\012will blow a power supply. The problem is caused by parts called\015\012capacitors overheating in the confined space of the monitor. ... Neovo AG 17" LCD Monitor
Monitor turns black after 3 seconds
Teo6925, "Switch-mode-power-supply" is in partial shutdown mode. Can you see any electrolytic filter capacitors that have a slight "swelling" to their tops? They should be flat!! You may also need to inspect all the soldered component connections ver ... BenQ Computer Monitors
LCD monitor turns black after a few seconds
I went through a lot of threads trying to come up with the solution to this problem, monitor goes off after a couple of seconds of just hitting the blue power button, and the solution I came to is the power supply within the monitor has gone out! whi ... ViewSonic VA1930WM LCD Monitor
RE:monitor goes black
Monitor going black after a few seconds can be causd by a faulty power supply or inverter. Some monitors have both as one unit.\015\012Sometimes it is basic failed capacitors, After that then I would look at transistors.\015\012The averag ... Acer AL2017 20" LCD Monitor
The monitor turns black immediately after power cycle
I think it can be the capacitor problem, open monitor an look for swollen capacitors. if you will find them swollen or\015\012\015\012\015\012mso ... LG 22" FLATRON LCD Monitor
Computer monitor screen stays black
Check secondary power supply budged capacitors and apply fresh solder. check also lamps connectors. ... LG Flatron L1710S 17" LCD Monitor
X2gen mw19u 19'' widescreen monitor going black
X2GEN - MW19U, same problem as described in the other posts. A week ago after a reboot it did not turn on. Pressed the power button, it turned off. Pressed it again after about a minute, all was fine until this morning. Same as before except t ... X2Gen MG19MY 19" LCD Monitor
Monitor turns off after about 3-5 seconds
I would say your monitor is bad if you have tried it on 2 different monitors and it does the same on both. Check your warranty expiration date, some monitors have 2 or 3 years warranty. If it's still under warranty, you may be able to have it replace ... Samsung SyncMaster 920NW Monitor
Black screen as soon as the computer boots up and we turn the Daewoo l700c monitor on, the screen goes on for a split 2 seconds and turns black, hitting the auto button again the screen appears for a split second then turns to black.
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:\ ... Daewoo L700C 17" Flat Panel LCD Monitor
AL1916W displays for a second and turns black
This is because the backlight is going out, and without it you can't see the image on the display. (If you look closely you can sometimes still make out faintly what's on the screen.)The trouble is frequently because of capacitors in the ... Acer AL1916W 19" LCD Monitor
Microtek 997M monitor doesn't stay on...
The inverter is the most common item to fail on a LCd monitor. Capacitors usally fail the most. Are the tops of any of them popped up. If you had any shorted transistors the fuse would probably be blown. Usally labeled F1. I would replace all the cap ... Computer Monitors
My monitor will go to black after a while and is
First, try connecting the monitor into another computer to isolate the\015\012problem. If it's proven that the monitor is the problem, this monitor\015\012needs repair. \015\012\015\012I'm not sure if your monitor has a board called inver ... Dell E173FP 17" LCD Monitor
Monitor screen goes out (black) 2 seconds after turning on
Your site is extremely misleading and fraudulent. I was under the impression that I would at least get a hint at what might be a problem instead of you folks making me wait to get a money for something answer that you could have displayed on your mai ... Mag Innovision LT976S 19" Flat Panel LCD Monitor
Monitor goes black for a few seconds
Try swapping the monitor cable from the working monitor to the other video connection on your computer. Effectively reversing the connections to isolate whether your problem is the video card in your computer or the monitor itself. If you find the ... Rosewill R900J 19" Flat Panel LCD Monitor
Green light comes on for a few seconds then turns orange
Hello,If you have a popped cap then the mosfets are blown. They blow as soon as the cap shorts and pops. You need to replace both mosfets and the 220uf caps and test the fuse with a multimeter I would bet its blown too.Buddy ... Acer AL1916W 19" LCD Monitor
Liquid Video monitor goes black after 30 seconds
I acquired one of these at a flea market. Same problem, same solution as skotkolr's. The "runs for 30 seconds" or cycles on and off is caused by the run capacitor for the switching power supply controller IC. It's usually 47uF/25V and can be found on ... Computer Monitors
ViewSonic Monitor has trouble to wake up after been shut down?
... ViewSonic VG2030wm LCD Monitor
Monitor E172FP only fashes on then turns black.
Its a bad solder/heat problem with the power board you need to repalce\015\012eaither the board or parts on the board the parts on the board are:\015\012\015\012Q743 - FU9024N\015\012Q741 - FU9024N\015\012Q759 - 2SC5707 ... Dell E173FPb 17" TFT LCD Monitor