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LCD TV is the old technology of TV ,we are solving all types of fault on this TV . most of the common faults are mother board failure , short circuit issue in power supply and different’s type of display issue is like double image, negative image ,colour issue,some disturbances in display and blank screen display
LCD TV – Picture Issues (Lines/Blurred/Double Images/Colour Distortion)
Applicable Products and Categories of This Article
Try a solution based on the issue you are experiencing:
NOTES:
- If the screen of your TV is black and nothing is displayed, see the FAQ: No picture on the TV screen.
- When using a TV with the Self Diagnostics option, try the Self Diagnostics test. For details, refer to the following Q&A: How to use the Self Diagnostics option.
- Lines on the screen
- Blurred screen
- Abnormal display
- Grey screen
- Odd colors on the screen
- Other screen issues
Lines on the screen (vertical/horizontal lines, bands)
Image diagram of symptom
Press the HOME button on the remote to display the TV menu screen.
When the same issue occurs in the menu screen
There may be an issue with your TV. Follow these steps to troubleshoot:
- Restart the TV and check if the issue is resolved.
- Turn off the TV and unplug the AC power cord (main lead).
- Keep the TV unplugged for 2 minutes.
- Plug in the AC power cord (main lead) and turn on the TV to check its status.
- If the above steps does not help to resolve the symptom, the product may require service.
When there are no issues on the menu screen
There may be issues with the broadcast signal source, Cable/Satellite box, IPTV, or other devices such as a DVD player.
Follow these steps to troubleshoot:
- Turn off any electrical or battery-operated devices that may be creating radio frequency (RF) interference.
- If using an antenna, broadcast signals are reflected by nearby mountain or surrounding tall buildings and may cause ghosting in the picture.
It is recommended to adjust the antenna direction and location. - Try plugging the power cord into a different electrical outlet and/or surge protector.
These symptoms can occur if the electrical outlet is improperly wired or not producing the proper voltage.
If using a surge protector or extension cord, it also could be faulty.
Blurred screen (Blurry, Hazy, Dull)
Press the HOME button on the remote to display the TV menu screen.
When the same issue occurs in the menu screen
There may be an issue with your TV.
NOTE: Images may look like they are trailing or the screen may be dark during use in a cold place. This is not a malfunction and will recover when the temperature rises back to normal.
- Restart the TV and check if the issue is resolved.
- Turn off the TV and unplug the AC power cord (main lead).
- Keep the TV unplugged for 2 minutes.
- Plug in the AC power cord (main lead) and turn on the TV to check its status.
- If the TV is connected to an active and stable Internet connection, install the latest TV software.
- Clean the TV screen.
- If the above steps do not help to resolve the symptom, the product may require service.
When there are no issues on the menu screen
There may be issues with the TV settings, broadcast signal source, Cable/Satellite box, IPTV, or other devices such as a DVD player.
- For TVs with the Motionflow function, select Standard or Off.
- If using an antenna, broadcast signals are reflected by nearby mountain or surrounding tall buildings and may cause ghosting in the picture.
It is recommended to adjust the antenna direction and location. - The quality obtained from DVD discs recorded on home DVD recorders often varies due to different quality settings being used on the recorders.
Picture quality from VHS tapes often appears to be significantly worse than other sources, symptoms often include grainy and watery picture. - Reset your TV to the factory defaults. Refer to the instruction manual supplied with the product.
Abnormal display
Refer to the following FAQ.
The screen appears to have a cloudy, white shadow or bright spots when there is no input or when viewing very dark scenes.
If the display turns to grey when watching a TV program, try to perform the following.
- Reset the TV. For details on how to reset, see the FAQ below.
How do I perform a (soft) restart (reset) or Power cycle on Sony’s Android TV? - Update the software of your TV to the latest version.
How do I perform a software update for my TV
Odd colours on the screen (Solarization, No color, faded, Intermixing/Spreading of color)
Press the HOME button on the remote to display the TV menu screen.
When the same issue occurs in the menu screen
There may be an issue with your TV.
- If your TV has a reset function for its picture settings, follow the instructions below to reset the settings.
- Press the OPTIONS button on the remote.
- Select Picture.
- Select Reset.
- Restart the TV and check if the issue is resolved.
- Turn off the TV and unplug the AC power cord (main lead).
- Keep the TV unplugged for 2 minutes.
- Plug in the AC power cord (main lead) and turn on the TV to check its status.
- If the TV is connected to an active and stable Internet connection, install the latest TV software.
- If the above steps do not help to resolve the symptom, the product may require service.
When there are no issues on the menu screen
There may be issues with the TV settings, broadcast signal source, Cable/Satellite box, IPTV, or other devices such as a DVD player.
- If your TV has a reset function for its picture settings, follow the instructions below to reset the settings.
- Press the OPTIONS button on the remote.
- Select Picture.
- Select Reset.
- Check that the overall connections are configured correctly. Click here for the connectivity guide.
- If using an antenna, broadcast signals are reflected by nearby mountain or surrounding tall buildings and may cause ghosting in the picture.
It is recommended to adjust the antenna direction and location. - Turn off any electrical or battery-operated devices that may be creating radio frequency (RF) interference.
- Reset your TV to the factory defaults. Refer to the instruction manual supplied with the product.
Other screen issues
- If the TV is connected to an active and stable Internet connection, install the latest TV software.
- Clean the TV screen.
- If the above steps do not help to resolve the symptom, the product may require service.
LED TV
LED TV screen goes blank
In this case, most probably the power supply unit inside the LED TV has issues. The power supply unit is responsible for receiving current and sending it to all the components of the LED TV. The power supply unit develops issues due to a sudden surge in input supply. Usually, the capacitors on the power supply boards fail. If you disassemble the LED TV set, you could verify this by spotting a leaking or bulging capacitor. These problems are common in modern LED Televisions and the repair work is fairly simple and quick. It is recommended to find a technician as replacing the capacitor would require soldering skills.
LED TV has Horizontal lines on start-up
In this case, the root of the problem is low signal strength in the set-top box cable that is connected to the LED TV. This problem might not show up if you plug that set-top box to an old television. The reason for this is that older TV sets required lower input strength to work. With the modern LED TVs set it’s not the case. They require stronger input signals. Thus, switching to an HD set-top box will most probably rectify the problem.
LED TV with no sound output
Disconnect the LED TV from the AC power, then press and hold the power button on the LED TV (not the remote) for 10 seconds. After waiting for a minute, connect the TV set back to AC supply and press power button once. Then try out other “sound out” from your TV to a set of speakers. If the speakers work, clearly the internal TV speakers are not working. If it doesn’t, it is most likely that the audio IC that drives the internal speakers has failed. It is common in these sets as they use inexpensive low powered amplifier ICs that heat up and fail. A simple replacement of the audio IC will do the trick here.
LED TV not connecting to WiFi
The first step is to locate if the problem is in the TV or the router. If the TV has no problems in connecting to your mobile device, then probably the router is at fault. Try updating the firmware of the router. If that doesn’t work, factory reset the router.
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