Have TV Questions? Ask a TV Technician
Hello and Welcome. My name is ***** ***** I'll assist you today. I'm sorry you're having trouble with it. Please reply back when you're ready to proceed.Thanks.
- What video devices/ sources (such as cable box DVD player etc) are connected to TV and does the problem occur on all video input sources?
How old is the TV and is it still under warranty?
Thanks for the picture. Do the Samsung menu graphics also appear in red when push menu button on TV remote?
Can you check TV own menu appears normal?
Apparently it seems display panel internal issue, however, I would do firmware upgrade as first step to see if it helps, please go to following Samsung link and download upgrade-file (USB type) to proceed firmware update..
If it doesn't fix the issue then I'll swap the main board as last thing which will help to resolve the problem or confirm if display panel is defective.
Main board would cost you money and firmware upgrade wont so try the easy/ free thing first to see if it helps to fix the issue, its just my approach -:)
What are the symptoms of 09 model Samsung?
OK, UN55D6900WF is newer model and has no issues with capacitors on power supply board, however, complicated circuitry of main board to make it smart TV have issues with main controller chip mounted on main board and it seems that chip gets internal issue when internal temp buildup. is would be good idea to bow the air of a cooling fan over that big chip on main board to see if TV works for longer time.
This test will help to confirm the main board has internal problem or display panel is defective.
Sure, take your time.
It seems main board internal failure, please replace main board in TV that will resolve the problem.
I trust my input will help you out. Please feel free to respond if you have any additional questions.A positive rating to answer would be greatly appreciated, please click on 5 star on this page then click submit/finish button so I can get credit on website for my work. If you don't see rating option then intimate here.Regards,Shahid.