Question about LG Flatron M4715cg Commercial Grade 47"computer Monitor

Open Question

Lg m4715ccba back light turn off then power down after 05 seconds

I change the inverter and inspect the caps on the power supply

Posted by on

2 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

alpug
  • 1961 Answers

SOURCE: Would power up with white

the problem is not on the inverter board because you have a white display it must be on the mainboard try reseting the mainboard look for the reset switch on the mainboard a small switch soldered on the main pc board press this switch while the power is on...

Posted on Jan 23, 2011

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

LG 47LN5200 no picture led blinks then shuts down


Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electro-medical.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board

Mar 08, 2016 | LG Televison & Video

1 Answer

LED Backlights on LG TV?


If audio is OK, the backlight inverter is the part should suspected. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electronicshelponline.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement.

Oct 25, 2015 | LG Televison & Video

1 Answer

I have a LG TFT (17") monitor. When putting on the power, the power LED binks for a second and automatically it goes down for ever. I have checked my power points, it is working fine. Also changed the...


You may have power supply problem due to bad caps, shorts circuits in the inverter circuits.
So try it with another PC to make sure it is not the PC problem.
If it is monitor problem, then
If you are going to DIY and have proper tools and know safety precaution then please read on:
Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply (they should be replaced in a set), blown fuses; poor solder joints, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed monitors to get some ideas what to look for: http://s807.photobucket.com/albums/yy352/budm/
Post back what you see inside so we can guide you further and it will help out other people in the future also.

Basic LCD monitor troubleshooting guide:
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide

http://en.wikipedia.org/wiki/Capacitor_plague

Learn about bad caps: Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.

Nov 24, 2010 | LG W1934S-BN 19" Monitor

1 Answer

Philips 19pfls422d/27 LCD tv. Turns on for a few seconds, everything is great, but then shuts off (power light goes from blue on to yellow standby) Was told it's the power supply board, but I can't find...


It may have gone into protection shut down mode because it sensing overload by such thing as the backlight inverter board. You may want to inspect the power supply module first for bad DC filter caps, then check for shorts in the inverter board.
If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on:

Please see my basic troubleshooting guide here:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide

http://s807.photobucket.com/home/budm/allalbums

http://en.wikipedia.org/wiki/Capacitor_plague

Parts: www.shopjimmy.com

Please post back what you find.

Jul 28, 2010 | Philips Televison & Video

2 Answers

Akai LCT2662 won't turn on, indicator solid orange


Any luck getting this fixed?Please let me know.Thank You very much!
Tyler

Jul 13, 2010 | Akai LCT2662 Television

1 Answer

Screen comes on then goes off after 5 seconds


You may have power supply DC filter caps problem or the back light inverter circuits, need to inspect the inside.
Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply, blown fuses, poor solder joints, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed monitors to get some ideas what to look for: http://s807.photobucket.com/home/budm/allalbums
Post back what you see inside so we can guide you further and it will help out other people in the future also.
http://en.wikipedia.org/wiki/Capacitor_plague
http://www.badcaps.net

Jun 29, 2010 | Proview PL713B 17" Flat Panel LCD Monitor

1 Answer

20" lg LCD backlight turns off after about 5 seconds of use.


First, check the power supply for the backlight. It's usually a 24 volt supply. Look for swollen caps. If that is ok, go to the inverter board and inspect for damage, ohm out the inverter transformers. Last is to test out the lamps seperately with an external inverter. If a lamp goes out this way, it is bad and causing the whole backlight to go out.

Apr 14, 2010 | LG 20LS7DC 20 in. LCD TV

1 Answer

I think its the power supply


The problem can be in 3 places: bad caps in the power supply, shorts circuit in the back light inverter, or bad lamps. You need to open it up and inspect the board for bad caps or burnt parts, take some voltage measurement, you should have 12vdc for the inverter circuits. See example of monitors with bad caps: http://s807.photobucket.com/home/budm/allalbums

Jan 20, 2010 | Dell UltraSharp 2407WFP 24" LCD Monitor

2 Answers

MONITER LIGHT IS GREEN BUT ONLY SHOWS A NORMAL SCREEN FOR 1/2 SECOND THEN TURNS BLACK


HI. I had the same problem with mine. It would flash the screen on for a split second and then turn black, the whole time the power light remained green. Upon opening up the case, I pulled the combo power supply board/inverter board out for inspection. I noticed one of the capacitors had a bulge on top indicating it was bad. It was the the 680uf 25v capacitor. I desoldered it, and soldered in the new one. After hooking everything back up, bingo!! Monitor now works perfectly. I couldn't find an exact match to the capacitance locally, but I had a 1000uf 35v cap in my utility box. It worked fine as a replacement. You can usually go within 30 percent of tolerance and be alright. Just don't go under on capacitance or voltage. I hope this helps.

Nov 25, 2007 | LG Flatron L1710M 17" LCD Monitor

Not finding what you are looking for?
LG Flatron M4715cg Commercial Grade 47"computer Monitor Logo

Related Topics:

73 people viewed this question

Ask a Question

Usually answered in minutes!

Top LG Computers & Internet Experts

Doctor PC
Doctor PC

Level 3 Expert

7733 Answers

Les Dickinson
Les Dickinson

Level 3 Expert

18390 Answers

Michael Vincent Cruz

Level 3 Expert

868 Answers

Are you a LG Computer and Internet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...