Question about Sceptre X9G Komodo IV 19" Flat Panel LCD Monitor

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Black screen flashes when i wiggle the inverter

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  • Sceptre Master
  • 848 Answers

Black screen? This trouble maybe power supply or inverter boards is defective.
first you can test the voltage of the multr,and then check which part is defective.From Wisiny.com can find those parts
if you have any question,please let us know email:service@wisiny.com.thanks,we sincerely hope we can help you!
you can also check this boards whether suit you:
Sceptre LM004 Power Supply Backlight Inverter for X9G KOMODO

Posted on Mar 22, 2015

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  • Master
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Could it be a dry solder around the inverter transformer , try to re solder all suspicious points , that should fix the problem, hope it helps , AJ

Posted on Jun 04, 2008

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Posted on Jan 02, 2017

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1 Answer

Samsung smart tv has a black screen that flashes to a real screen for about 1 second then goes back to black. it has sound


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/
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. 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.

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Why some graphic motherboard in Graphic card port disply came but in normal display not came


Difficult to understand your question.
If an external monitor works then the problem is Cheapest to most expensive:
MB to Power inverter cable is bad (No light to board) to check shine a flash light at you screen if still black not this
Power inverter is bad
(No light to board) to check shine a flash light at you screen if still black not this
Cable from Motherboard to Laptop screen is bad flashing on wiggle test will show flickering image
Display panel on laptop is bad if this is the case replace the Display cable/ Inverter power cable/LCD
this may still not solve the problem if you are not sure take to a local repair shop

Mar 30, 2013 | AMD 486542-001 - HP Pavilion DV7 Series...

1 Answer

Polaroid LCD tv - model TLX-04244b . Flashes the blue polaroid screen then goes black ,I hear a buzz coming from the inverter board. I have replaced both inverter boards and the same problems exisis .


I just changed out the invertor boards and mine was fixed. I had the same problem. Im not a TV repair man but replace the board thats buzzing and it will work again.

Jun 23, 2012 | Polaroid 4226TLMB 42 in. LCD TV

1 Answer

My ACER AT4220B LCDTV has sound but no picture. When powered on the Acer screen flashes on for about 1/2 a second then the screen is black. When connected to a computer the windows desktop flashes and then...


This tv have a 2 long boards call the LCD inverter boards.These 2 long LCD inverter boards are dead.These 2 long LCD inverter boards help the LCD screen panel to have a backlight to produced a picture.Tries websites like Shopjimmy.com,Ebay.com to buy a 2 refurbishes long LCD inverter boards for the replacement.

Dec 06, 2010 | Acer AT4220B 42 in. LCD TV

1 Answer

My screen on my acer is black but works with extenal monitor


If the screen is not cracked (which you still usually see some picture) It is usually either a bad lcd backlight or inverter. Check that the wires going to the lcd are connected and that there are no breaks in the wire insulation, you may try wiggling it. 9 times out of 10 it is the inverter, unless it was dropped or there was some major vibration to blow the bulb, but I have never encountered a bad bulb.

Mar 28, 2010 | Acer Aspire 5610-4648 Notebook

1 Answer

Monitor flickers or 1/3 turns black, have tried wiggling cable, and moving/tapping monitor, sometime it works great, other times i fight this every few min. Doesn't matter if i turn computer all the way...


You may have a faulty inverter or loose power inverter connection. OR
You may have a defective CCFL backlight, it may have the following symptom: Screen flashs on red/pink and off. Picture stays on in red and slowly be come normal. Picture flickering with dim display or appear black. Picture flickering on and off. All these symptoms indicate that the LCD backlight lamp (CCFL Lamp) has reached the end of the life and all you need to do is replacing the CCFL lamp.
Connect an external monitor to your laptop and power the monitor up first then the laptop, if you see the normal Windows images then the video card and laptop is OK and the problem is definitely the backlight. Dim image and/or dark display on the laptop's LCD screen indicates a faulty LCD backlight and it could be the inverter that supplies high voltage to the CCFL lamp or it is the CCLF lamp is nearly burnt out or burnt out, most likely this is the case.
The inverter can be replaced easily but the CCLF lamp is more time consuming and requires soldering skills.
Check out
www.lcdparts.net

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1 Answer

Display Problems


You could have a faulty inverter or a CCFL lamp, To determine if you have a LCD screen, inverter or video card problem, read this and follow these instructions.
Defective CCFL backlight, it may have the following symptom: Screen flashs on red/pink and off. Picture stays on in red and slowly be come normal. Picture flickering with dim display or appear black. Picture flickering on and off. All these symptoms indicate that the LCD backlight lamp (CCFL Lamp) has reached the end of the life and all you need to do is replacing the CCFL lamp.
Connect an external monitor to your laptop and power the monitor up first then the laptop, if you see the normal Windows images then the video card and laptop is OK and the problem is definitely the backlight. Dim image and/or dark display on the laptop's LCD screen indicates a faulty LCD backlight and it could be the inverter that supplies high voltage to the CCFL lamp or it is the CCLF lamp is nearly burnt out or burnt out, most likely this is the case.
The inverter can be replaced easily but the CCLF lamp is more time consuming and requires soldering skills.
Check out
www.lcdparts.net
for parts, repair service and DIY info.

Jul 02, 2009 | Dell Latitude 100L Notebook

1 Answer

Monitor black Replaced lcd inverter


Hi,
The Inverter just proved that the power up is just fine, and Video Card are just in perfect shape. Try to see if you can finde a replacement for the ccfl in the screen.

CCFL is Cold Cathode Flouroscent Lamp, a type of lighting LCD screens use to ulluminate the screen.

Try to turn on you laptop, you will then flash a light on the screen, you will notice there is display, only dimmed. This should work after you replace them just fine. :)

Apr 26, 2009 | Dell Inspiron 1501 Notebook

1 Answer

Samsung plasma all black screen


Black Screen come from three areas. 1- Power Supply Board 2- Inverter Board 3- Processing Board on the LCD. Since the Power Supply Board was replace, it easy to troubleshoot where the problem. lies If you cannot get the backlight, then its the inverter board. If you can use a flash light on the TV screen and can barely see the images, then the problem is indeed the inverter board. If you cannot see any images when using a flash light, then the problem comes from the LCD processing board. Let me know if you have any success. Mike

Feb 21, 2009 | Televison & Video

1 Answer

Lg l1920 lcd monitor's screen flashes when turned on


Could be an inverter problem, if it powers on for a brief second and then flashes off then the inverter is at fault. Check for any Capacitors which have a yellowish substance at the top, they looks like round blue or black cans and if they look like they are buldging then they will need replacing.

hope this helps =]

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