Question about LG L1915S 19" LCD Monitor

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I have a problem with my LG LCD TV, when we switch on, the screen becomes blank and after several attempts the power button will go green, then after some attempts the picture will try to populate and disappear then only will the screen come up after several on and offs.

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You may have dying power supply problem due to bad DC filter caps, need in-depth troubleshooting if you have electronic repair experience and proper tool, service manual will help to have.
If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on:

Basic troubleshooting guide here:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors pictures: http://s807.photobucket.com/albums/yy352/budm/
Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague
Parts: www.shopjimmy.com
Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps.
Or www.digikey.com just make sure to use caps with low ESR, 105c, high ripple current, long life rating such as PANASONIC FM or FC series.

Posted on Mar 28, 2011

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Posted on Jan 02, 2017

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Hello, I have a lg lcd monitor. w1941s model. when I start my computer, it work for sometime. then it goes blank showing only the LG logo. then the power button doesnot work. it hang up glowing. again


If your LCD TV or monitor has stopped working, or is displaying one of the following symptoms, then it's a candidate for some new capacitors
- Flickering screen
- Screen image disappears after several seconds
- Dim screen
- Slow start
- Power LED on, but no picture
- Unusual colors and/or lines
The primary cause of LCD TV and monitor failure is caused by faulty capacitors. You can examine the capacitors in your LCD TV or monitor and actually see if they are bad.
If they appear bulged on top, then they need to be replaced.
New capacitors will solve a host of problems in LCD monitors and TV's and will extend the life of your monitor or TV by several years.
Take it to a repair shop.

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Coby tftv2224 hard to turn on takes several tries


Sounds like bad power supply capacitors, simply fix if you have electronics repair skills.

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LG 37LC7D HDTV just went blank. Screen blacked out and green light is on but no response to input change, remote, volume, or channel change. I've unplugged it for several minutes in an effort to reboot...


My lg 37lc7d is having the same problem. My backlight is on but no display. Also the standby light blinks several times then the screen goes on but it's just all black. No a/v

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1 Answer

The 42" LCD / LG


The Power Saving feature might be on. Switch it off.
Also, there is a feature in modern LCD TV's to switch off screen, when not required, to reduce power consumption, like when listening to songs on TV. Switch the feature off. Generally the button for this feature is shown on remote in green colour with 3 horizontal lines in a rectangl.

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2 Answers

My LG HD tv screen suddenly went green. sound is


Hi,
I disagree with info provided, if screen of your LG lcd tv becomes green that means inverter board is working and lcd tv does not have convergence ICs.
Please unplug tv from ac wall socket for minute to get it reset, replug back in and turn it On and check its picture.
If still showing green screen then change input source with remote, if tv shows same green screen on all inputs that means its either lcd panel problem or digital signal processor got bad loacted on main board. Local tv repairman is needed to confirm and fix it.
Thanks.

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1 Answer

Lg2234s monitor goes of blinking...cant turn monitor off (blue light remains off) then monitor turns on ..screen pic returns but is totally green, the OSD becomes garbled, if set to return to default then...


emale36, Could be problem with the "switch-mode-power-supply" inside the unit. If dc voltage rail is noisey or marginally on the low side of rated specification then strange things will start to occur on screen. Contact LG (Lucky-Goldstar) if unit is covered by warranty. The unit will need to be evaluated by technician. Visit YOUTUBE to see video clips of monitore being repaired by their owners. Read more of my profile responses to other LCD owners. 12fixlouie

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