Question about Samsung 40 Inch UA40F6400 Full HD 3D Smart LED Multisystem TV 110 220 Volts
When i turn on the tv the screen flickers with nothing on the screen however the sound seems to be working absolutely fine. i tried the torch test but its just the flickering or flashing screen please suggest ..
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Posted on Jan 02, 2017
I had a similar problem on a different monitor and fixed the green sparkles by selecting a lower refresh rate.
Posted on Sep 06, 2008
That's indicated your backlight inverter are busted. Need to replaced a new one or repaired it. To repaired look for a bad capacitors with a bulged on top of each caps. Not sure, just replaced all the caps... Have a nice weekend!
Posted on Oct 11, 2008
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.
Posted on Aug 31, 2009
Most likely the set has lost vertical sweep or the feedback from that circuit. This will shut the set down to prevent a horizontal line from burning the face of the CRT. This will have to be looked at by a technician.
Posted on Sep 11, 2009
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