Hello, I'm Shahid. Sorry to hear that you're having trouble with this but I'll do my best to help.
1- Could you please get me the model number written on back of TV?2- 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?Thank you.
Thanks for the info and sorry about delayed reply, I was away from computer.
- How old is the TV and how long it have had this problem?
- Any other issue like delayed power up etc in TV?
Thanks for the info. First of all please disconnect power lead of TV and connected devices for 10 minutes to reset them, reconnect power and turn them On to see if it fix the issue.
If problem persist then it would be TV internal issue and most probably failing power supply board or t-con board in TV can be cause of these symptoms. If needs further troubleshooting with multimeter to check output volts of power supply board, if volts are as per specs then t-con board is most likely failing and should be replaced to resolve the problem. I hope these info will help. If you have any additional questions, feel free to ask. If you're satisfied, please rate me a 5-star at the top of your page. Thank you.
OK, take your time.
OK, it seems t-con board related issue, reconnect ribbon cables plugged into t-con board that will refresh the connections and it might help to resolve the problem.
T-con board is located at lower middle at rear of TV, couple of flat ribbon cables from t-con board going inside screen, you would need to reconnect these cables very carefully because these flat cables are very fragile and damaged easily which will be irrevocable loss so do it at your own risk.
Reconnecting those cables will help to refresh the connections of cables to t-con board that might help to resolve the problem. If you feel uncomfortable doing so then ask local TV repairman to do it for you. I hope these info will help. If you have any additional questions, feel free to ask.
You're welcome. If you're satisfied, please rate me a 5-star at the top of your page. Thank you.