Have TV Questions? Ask a TV Technician
Hello, I'm Shahid and will be happy to assist you. I need additional info to troubleshoot the issue.
- Does screen glow for a while when power On the TV?
- Do you get program sound from TV speakers?
Thanks for the info. This kind of problem mostly occurs due to failure of scan boards in TV known as y-sus and z-sus located on either sides of rear of panel. It needs further troubleshooting with multimeter to determine which board is not working to get it replaced. Please reply back if you have multimeter and can check high volts on circuit boards inside TV to troubleshoot it if you wish to repair the TV yourself and 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'm sorry there is no easy or quick fix for this problem and it is definitely hardware failure that needs defective board replacement to resolve the issue. I trust my input will help you out to make decision about this TV repair or invest that money on new replacement TV. 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. Regards,Shahid.
I'll try to explain it, if screen shows any light/ glow even for a second on start up that means scan boards are working and next suspected thing would be main board, one that has all video inputs, main controller/ processor chip that controls all the functions of TV. Scan boards failure is most common in plasma TVs and TV mostly wont turn On/ power button doesn't work in case of main board failure or you will get noisy image or lines or bars etc on screen.
I hope these info will help, 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. Regards,Shahid.
Chris, need to check Vs and Va volts output P811 on power supply board that goes to scan boards, if volts appear for a while then unplug connector and again check Vs and Va volts on power board that would stay longer and it indicates shorted scan board, probably ysus board located on left side of rear of panel.