20 Most Recent Samsung UN55B8000 55 in. LCD HDTV - Page 4 Questions & Answers

05683m Main Board See attached link for boards. http://tvboardsandcomponents.com/05683m-main-board/

Main digital board fault. Contact the authorized service center for Samsung. Gopakumar Gopalan Google

Main board fault. Contact any service technician; or the authorized service center for Samsung. This is not a user repairable fault. If you wish to get some details, check the site linked here. Surf the site in "MOSAIC" view. It will make surf easy. http://electronicshelponline.blogspot.com/

I'm guessing. you are watching the freeview.... if it is then there is a setting in the free view setting to sync sound and picture. find that it should be set a ( 0 ). sometimes just doing a system rest will sort it out. On the freeview setting.

Check and replace its main power regulator board.

sounds like it is set for 3D alter settings in setup menu ?

Lightning damage can do a # on LCD TV's. I've seen cases where it took out power supplies and main boards at the same time. I'm not one who likes to use the "shot gun" approach. You would need to get the set professionally diagnosed in my opinion. Where did you get the main board from?? Are you sure it is a working board?

DO NOT ATTEMPT ANY REPAIRS, CALL THE FACTORY PHONE NUMBER IN THE OWNERS MANUAL AND FIND OUT WHERE TO HAVE THE TV SERVICED, IF YOU ATTEMPT ANY REPAIRS THEY WILL VOID THE FACTORY WARRANTY. THIS IS CAUSED BY AN ELECTRICAL FAULT INSIDE THE TV, IT SHUTS DOWN AS A SAFETY FEATURE TO AVOID ANY FURTHER DAMAGE.

Hello. You can check HDMI cable in this case. If you're using an HDMI port that's not working well or has been damaged, it could result in a darker-than-usual screen. If you switch the cable or change devices and the TV is at a regular brightness, this is the case.

It sounds like you might be dealing with backlight bleeding or an issue with the LED backlighting in your TV. This can sometimes occur over time due to normal wear and tear or manufacturing defects. If it started as a faint single brighter section and has now expanded to four, it's likely a hardware issue. While it may not be an easy fix, contacting the manufacturer's customer support or a professional technician would be a good next step to diagnose and possibly repair the problem. If you'd like, you can share the pictures for a more accurate assessment.