Have TV Questions? Ask a TV Technician
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- 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?Thanks.
OK - Have you tried to unplug TV and cable box power cords from wall outlet for 10 minutes to reset, replug back in, let cable box reboot that may take several minutes and check?If not yet, can you try it now and reply back with the result?
OK, please check control buttons located on TV itself as one might get sticky and causing the issue?
Sorry about delayed reply, I was checking TV manual for troubleshooting purpose, give me 10 minutes please.
Yes, control buttons are located on left side panel of TV.
OK, there are two possible causes, either the control button board or main board of TV is defective.
Any switch or circuit line got joined on control button board and causing continuous input command to main controller chip OR the main control chip mounted on main board of TV has got internal problem and generating continuous input command which is causing the problem.
There is a test to verify which board is bad, remove back cover of TV and disconnect control board connector/ harness, turn On the TV and check. If problem is no more then control button board is bad and if problem persist then main board is defective and should be replaced. If you are not comfortable working on it yourself then you may please use following link to get list of TV repair shops in area which will help to get repair quote...http://www.tvrepairpros.com/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.