UN48H6350AFXZA I have the above tv lately the picture just disappears while there is still audio. What is the most likely issue.

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 issue occurs in the Menu screenThere may be an issue with your TV. Follow these steps to troubleshoot:

1. Restart the TV and check if the issue is resolved.
   1. Turn off the TV and unplug the AC power cord (main lead).
   2. Keep the TV unplugged for 2 minutes.
   3. Plug in the AC power cord (main lead) and turn on the TV to check its status.
2. If the above steps does not help to resolve the symptom, the product may require service. Go to Product Repair.

When the issue occurs on other than 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:

NOTES:

• If this issue only happen to one particular channel or broadcaster, this may be due to the broadcast signal source. Please contact your service provider for further information.
• If you experience issues when connecting a TV and an Audio/Video device via an analogue cable (composite or component cable) or HDMI cable, check the following section of this article before proceeding the steps below: Screen issues (Lines/Blurred/Odd colours) from the Audio/Video device

1. Turn off any electrical or battery-operated devices that may be creating radio frequency (RF) interference.
2. 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.
3. 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.

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How to perform a software update.

Clean the TV screen. Refer to the following FAQ.
How to care the LCD TV

If the above steps do not help to resolve the symptom, the product may require service. Go to Product Repair.

When the issue occurs on other than 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.

NOTE: If you experience issues when connecting a TV and an Audio/Video device via an analogue cable (composite or component cable) or HDMI cable, check the following section of this article before proceeding the steps below: Screen issues (Lines/Blurred/Odd colours) from the Audio/Video device

1. For TVs with the Motionflow function, select Standard or Off.
2. 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.
3. 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.
4. Reset your TV to the factory defaults. Refer to the instruction manual supplied with the product. Manuals are posted on your model support page.

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Picture and video on the TV is displayed doubly.
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The screen appears to have a cloudy, white shadow or bright spots when there is no input or when viewing very dark scenes.
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Adjusting the Picture setting on my Android TV

For other than Android TVs: Adjusting the Picture setting on my LCD TV

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How to reset an Android TV?
How to perform a power reset on a Sony television.

Update the software of your TV to the latest version.
How to perform a software update.

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Adjusting the Picture setting on my Android TV

For other than Android TVs: Adjusting the Picture setting on my LCD TV

If your TV has a reset function for its picture settings, follow the instructions below to reset the settings.

Press the HOME or MENU button on the remote control.

The next steps will depend on your TV menu options:

• Select Settings- Display & Sound, Picture & Display or Display - Picture or Picture adjustments - Advanced settings - Reset.
• Select Settings- Display - Picture - Reset.
• Select Settings - System Settings -Picture - Reset.
  NOTE: If your remote control has the Option button, you can reset the settings by pressing the Option button on the remote control - Picture or Picture Mode - Reset.

Restart the TV and check if the issue is resolved.

1. Turn off the TV and unplug the AC power cord (main lead).
2. Keep the TV unplugged for 2 minutes.
3. 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. Refer to the following FAQ.

• How to perform a software update.

If the above steps do not help to resolve the symptom, the product may require service. Go to Product Repair.

When the issue occurs on other than 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.

NOTE: If you experience issues when connecting a TV and an Audio/Video device via an analogue cable (composite or component cable) or HDMI cable, check the following section of this article before proceeding the steps below: Screen issues (Lines/Blurred/Odd colours) from the Audio/Video device

• If your TV has a reset function for its picture settings, follow the instructions below to reset the settings.
  1. Press the HOME or MENU button on the remote control.
  2. The next steps will depend on your TV menu options:
     • Select Settings- Display & Sound, Picture & Display or Display - Picture or Picture adjustments - Advanced settings - Reset.
     • Select Settings - Display - Picture - Reset.
     • Select Settings- System Settings - Picture - Reset.
       NOTE: If your remote control has the Option button, you can reset the settings by pressing the Option button on the remote control - Picture or Picture Mode - Reset.
• Check if the cable is firmly connected to the TV and the connected device and make sure it is not loose.
• Use a spare cable to replace the currently used one and see if the situation will improve.
• Use another input terminal of the TV.
  1. Connect your device to other input terminals of your TV.
  2. On the TV's supplied remote control, press the input button to switch to the input method that corresponds to the connected device and check if the situation improves.
• Connect another A/V device to your TV using the same input terminal to check whether the connected A/V device causes the issue.
• 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:
  • For Android TVs: How to reset the Android TV to factory settings
  • For other than Android TVs: How to reset the television to the original factory settings

The Picture Off mode could be enabled if the picture is visible for a while. To check if this is the case, press any button on the remote other than power or volume. If it is, press Menu. Enter the Picture sub-menu and select Picture Off. Disable the feature. This feature is described in the E-manual for the 6350 series TVs here: https://www.samsung.com/us/support/owners/product/2014-led-tv-h6350-series . See http://www.manualsdir.com/manuals/421041/samsung-un32h5500afxza-un32h6350afxza-un50h6400afxza-un48h6400afxza-un65h7150afxza-un60h6350afxza-un65h6400afxza-un48h6350afxza-un40h5500afxza-un60h7150afxza-un46h7150afxza-un50h5500afxza-un75h7150afxza-un60h7100afxza-un55h6350afxza-un40h6350afxza-un55h63.html?page=163 for just the page on the picture off mode. If the picture is dim at times, check if the eco solution mode is enabled (System > Energy Savings).

If the screen is always dark, then the back light is not working. This can be caused by the failure of the LED back lights or the inverter that powers the backlighting. If you see a faint image when you shine a flashlight at the TV, this could the problem. The inverter usually fails before the LEDs. Replacing the inverter requires opening the TV and could have a shock risk. Replacing the backlighting requires separating the LCD panel from the bezel and getting between the layers at the edge of the panel.

I hope this helps.

Cindy Wells

If the TV is older than 3-5 years or do, it is probably an LCD model with a fluorescent backlight. These backlights have issues with the inverter boards and/or the tubes failing over time. This is why newer flat-panels have gone to LED backlighting. Without the backlight, the picture is actually on the screen, but you aren't able to view it because there is no light to illuminate it. These CAN be repaired, but the cost of new TVs makes it almost most cost-effective to upgrade to an LED TV.

your audio ic is probly done..take the audio output from the back of the tv..if you have one..and put it into an amplifier to hear sound..

I'd guess it is not a bulb issue if the audio also stopped working. Check your input source, connections and the like. Try using a different input (ie input 4 or the front AV connectors) and a different source (ie your old Nintendo instead of your DVD player).

Hello, I am sorry about your issue. It sounds like your receiver needs to be serviced. Thank you, Onkyo USA

Connect the TV directly to cable box to make sure the TV and cable box are ok. If you have picture then the receiver is no good. Some Denons have problem with HDMI board (digital unit).

Me too! Apparently Diboss are no longer trading, so no help there. I am aware that these panels have a common power supply issue, the faulty chip is only available from China and the last one I fitted only lastest a couple of days. However the fault described above is not the same. I've checked the psu outputs; all are fine and nothing changes when the picture disappears, therefore I can assume that I'm not looking at a PSU fault. As Iain says above, it appears to be a signal link, however I have no picture on ANY input and without circuit diagrams I cannot find any component that's common to all the various inputs. This leads me to think that either the backlight, or the screen itself is faulty. I'll keep trying and if I get it sorted I will report back.

Jon

You need to do self diagnosis test first to see what area it is in.

AKB circuit (automatic kine bias), the timer/standby indicator blinks for about 30 seconds then goes to the self-diagnosis function. Something is wrong with the video. Check video out, Q705, 732, 761 and other components on the Cboard, also check Q218, 219, 220 on the A board. In addition, unit could be in IK blanking.