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How to repair my LCD monitor back light? - AOC 193FW LCD Monitor

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Take it to a computer tech shop....
doing it is little tricky...and will need expertise on opening brittle equip....
all the best

Posted on Sep 29, 2010

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Posted on Jan 02, 2017

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Samsung monitor 2232bw plus backlight fade in black backgrounds scenes


Most common failures in these LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply C242 470uF 10V, C241 & C242 1000uF 16V, C261 & C319 680uF 35V failed as indicated in the attached picture, replace them at once.

If the power supply board is working then it is back light problem, first do a flash light test. If you can see the image in the flash light test, follow the steps how to test back light voltages: https://how-to-repair.org/repair/lg-tv-repair-manual-pdf/lg-led-tv-no-backlights-32ln5300-32ln5310-32ln5700-voltage-test-troub/2pyuXwNkBMA.html and follow the steps how to repair back light LEDs: https://www.youtube.com/watch?v=_poWTEihIJU Fix Led Backlights for TV or Monitor Lg Led Tv No Backlights 32ln5300 32ln5310 32ln5700 Voltage Test Troub Lg... Fix Led Backlights for TV or Monitor
samsung-2033sw-2233sw-ip-43135a-bn4400124s-power-board-dfydxumns33ohqc3bsmt22yf-3-0.jpg

Nov 07, 2013 | Samsung SyncMaster 2233BW 22" LCD Monitor

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Hi, I have a ViewSonic VX2235mw LCD Monitor it was working fine then all of a sudden the screen turned off and now it wont turn back on. The power light is on and is Blue but no sign of life in the screen...


Hello,

This is a very common problem with this model after a few years of use. This problem is caused by a failure of the capacitors in the power supply board hat powers up the back lights in the monitor. When the back lights don't power up you get no display on the screen. Here is a link to a repair guide for that model that shows how to open the unit and what to look for and replace to repair the monitor.

http://www.ccl-la.com/blog/index.php/repairing-the-viewsonic-vx2235wm-lcm-monitor/

Here is part one of the three part video repair guide posted at the above link:


Jan 29, 2013 | ViewSonic VX2235wm LCD Monitor

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FPD1975W TFT LCD monitor my monitor blinks a blue power light and flsahis a white screen but it does not turn on ?


Hello,

A flashing power light indicates a failure of the power supply, this will also cause the white screen. Here is a link to a page showing what parts need to be replaced to repair the power supply board and get your monitor back running again.

http://www.ccl-la.com/blog/index.php/gateway-fpd1975w-monitor-repair/

I hope this helps, if so please rate my solution,

BuddyMc

Oct 09, 2011 | Gateway FPD1975W 19" LCD Monitor

1 Answer

Monitor has power. Will come on very briefly and the go to black screen. Can turn power off and back on and get the same above result.After a 2-3 hour period may come to life...may not.


It appears as if the monitor's back lighting is failing. To test the theory, take a bright flashlight and shine it on the lcd monitor screen when it goes black. If you can see the images that were on the screen before it went dark while shining the flashlight on the screen, then the back lighting is failing. Depending on the monitor, it could have florescent or L.E.D. back lighting, but it's usually more economical to simply replace the monitor with a new better performing monitor, than to attempt repairing the back lighting on the failing monitor.

Dec 01, 2010 | Samsung SM225BW 22 inch LCD Monitor

1 Answer

The screen goes blank after 1 second display, flicks back again to the display for 1 second and back to blank, this goes on non stop. The little led next to the on/off button goes from green to yellow...


pandres, Your monitor will need troubleshooting to find out reason why the 2 "cold-cathode-fluorescent-lamps" fail to remain lighted. They provide "white light" so you can see what is on the lcd panel. Connect a "known good" monitor to your pc to prove monitor is bad. If pc is ok, then your monitor will need repair. This type problem not new and is very common for all brands of ccfl back-lit lcd monitors. Watch some video clips at YOUTUBE that show disassembly and repair of ccfl lcd monitors. Read fixya profiles of "budmrtn" buddymc" "12fixlouie" for more information. 12fixlouie

Sep 08, 2010 | Neovo S 19 19 in. Flat Panel LCD Monitor

1 Answer

EMACHINE 19INW E19T6W MONITOR - when window starts up the monitor blinks on then goes black. blue "on light" remains on. If I shut it off and and restart it, it will flash to the desktop and then go...


1wildvine, The fluorescent lamps (CCFLs) which provide white light to allow you to see all the pretty text and graphics on the lcd panel are not lighting-up any more.This symptom is not a new one for ANY BRAND of lcd back-lit monitor. Wow! At least you were smart enough to do the substitution of a "known-good" monitor to prove problem NOT caused by PC!!! Since 99% of all lcd back-lit monitors use the same basic "technology" , "design" and "principle of operation" you can view some video clips of any brand lcd monitor being repaired by their owner/technician over on YOUTUBE to get a handle on just what is involved in "refurbishing" a typical unit back to life for more years of service. After doing some research on your own, please return to fixya and then and only then rate this response and leave a comment or testimonial. Bad (swollen and or leaky) filter capacitors possibly problem on SMPS board. 12fixlouie

Aug 12, 2010 | E-Machines eMachines Monitor E15T4

1 Answer

Won't power up. Press power button, turns green then orange.


Good day sir/maam, Hi, If the LCD is under warranty, use it, they will replace the LCD monitor for free. If not, you may need spend for a Power supply board, to repair one.

There are two boards usually found on an LCD monitor, one main board that controls the LCD screen, back light, inverter, controls and sound. the second board is the power supply board, which accepts mains voltages 90v-240v AC and convert them to DC to power the entire monitor.
If however you may bring it to a repair shop or dealer, they will replace the power board, and there you go. the monitor is done.

Nov 24, 2009 | BenQ FP737S-D 17" LCD Monitor

1 Answer

Blue LCD power light not working


this is just an led burnout. lots of us think that these don't burn out but, they do in rare cases. to replace this, you will have to repackage and mail this monitor back to the manufacture for repair.

Jan 28, 2009 | Soyo 19" LCD Flat Panel Monitor

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