Question about Philips 47PFL5704D 47 in. LCD TV

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Flickering Screen is flickering, believe it might be backlight issues at random times and multiple inputs. No pattern observed yet.

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It's the settings of your tv ajust your contrast to 100 bright to 50 and cut on the dynamic features this should solve the problem it did mine

Posted on Jan 11, 2013

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Upper sise of screen flickering problem


Technology b> A laptop's display assembly consists of an LCD panel, an inverter board and a backlight lamp. The inverter board supplies power to the lamp which lights up the LCD screen as it generates images. Light from the lamp is then uniformly distributed over the panel to create images. b> Cause b> Flickering is commonly caused by a damaged or malfunctioning inverter. Because a faulty inverter is not able to supply adequate power to the backlight lamp, the screen goes dim each time the backlight loses power. In some cases, flickering may also be caused by a faulty connection between the inverter and backlight lamp. Diagnosis b> Resolving a laptop screen's flickering problem entails correctly diagnosing the problem and replacing the faulty component. You may diagnose the problem by hooking up the laptop to an external display unit, such as a projector. If the external display has the same display problem as the laptop's LCD screen, it is indicative of a motherboard or video card problem. If the external unit displays bright, crisp images, the problem is probably caused by the backlight or inverter. b> Solution b> You may repair a laptop screen's flickering problem by replacing the inverter board or backlight. Order parts from a trusted supplier and replace the component by referring to your product documentation.
http://www.tech-faq.com/how-to-repair-a-laptop-screen.html http://www.laptop-repair.info/laptop_screen_repair.html b> Hope this helps.

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1 Answer

Screen flickering


Display Configuration

A flickering screen may be caused by the computer detecting incorrect display settings as it starts or returns from sleep.


It can also come from changes to the screen resolution settings caused by a new program or update installation.

Verify screen resolution before assuming the issue is hardware related.


Faulty Inverter


Next to the display screen behind the plastic screen bezel is a small component called the inverter, which supplies power to the screen backlight.


The flickering indicates the power is not reaching the backlight.

To fix the issue, replace the inverter.

Faulty Connectors


The wires and cables traveling from the display around the hinges and into the motherboard tend to wear at the hinge area.

Over time, the opening and closing of the screen causes this wear.


The solution is to disassemble the plastic casing of the laptop, reorganize the cables so they have no interference from hinges, or replace the cables and connectors with new ones made specifically for the computer make and model experiencing the issue.


hope this helps

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Power button flicking random


Is this affecting the operation of the PC?? If not, Just put some tape over the power button so you dont get distrackted by it. LED, the ligh source in the power button might be burning out.

Jul 29, 2012 | HP Pavilion a350n PC Desktop

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My Hp pavillion dv4 notebook pc's screen is flickering quite badly. It happens every few seconds and everything seems to jump up and down once and go back to normal. Tapping or hitting screen or any part...


Flickering is a back light issue, jumping around would be caused by the screens reaction to a bad inverter and so would the backlight as well. So flickering backlight and jumping would be a inverter issue causing both problems so I would replace them both.

Thanks if you like my adivice please rate it with the thumbs and leave feedback!

Dec 19, 2009 | HP Pavilion dv4000 Notebook

1 Answer

Screen flickering when turning on laptop and sometimes the laptop turns on after flickering and sometimes doesn't turn on at all after flickering. Just stays black.


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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Dell Inspirion Laptop Screen Randomly Flickers, Then Blacks Out


If this laptop is only a few monthe old, then it should be still under warranty. I suggest you return it to the supplier for repair or replacement under warranty. If you try to repair it, most likely you wil void your warranty.

If you don't have this choice then read the following info.
You most likely have a faulty CCFL lamp or inverter, 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.

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HP Pavilion dv9500 lcd screen issues. Turns pink after warms up.


Defective CCFL backlight may has 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.
  • 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 it up, 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.

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1 Answer

Laptop screen goes blank at random times.


Defective CCFL backlight may has 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.
  • 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.

Go to www.lcdparts.net for parts detail and installation

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