Hello, I'm Shahid. Sorry to hear that you're having trouble with this but I'll do my best to help. Please reply back when you're ready to proceed.Thank you.
Sorry for delayed reply, I was away from computer. Is it TV which doesn't power On?
OK, have you tried to unplug TV power cord from wall socket for 10 minutes, rpelug back in and check?
OK, it seems standby power supply section located on power supply board isn't working that is why no power light or sign of life found in TV. This kind of failure is expected if TV got surge volts or power cord is always plugged in.
You would need to replace power supply board in TV to resolve the problem. 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. 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.