It has sound but no picture, I replaced the tcon board and I had a picture for a few minutes then the screen went blank again. the back light is lite up.
If I had a dime for every one of these type of questions I could retire without my pension. The problem with these sets today is that they no longer fall under the category of "durable goods" which include washers, dryers, water heaters, furnaces, etc. They now come under the electronics category. This means that you shouldn't really expect these devices to last much longer than their warranty period. The days of TV sets lasting 10-15 years are over. Three to five is the new norm. They are designed with obsolescence in mind. The manufacturers do not build any tolerances into the electronics so any small power surge or glitch can cause a cascading failure through the device, taking out multiple board with it. You replace one, it works a few minutes, and then it gets blown out by another one that was bad as well. By the time you get through replacing all the boards, if you are lucky enough to get it working again, you find that for a buck or two more you could have bought a new one that was larger and with more features. This is the manufacturer's plan. If TVs lasted 10 years, then they can't keep selling them at the rate they can build them now. If you want one of these to live a little longer than normal, invest the hundred bucks or so into an UPS to attach to it for power and surge suppression. Dollar store surge protectors won't do much to save these touchy devices.
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