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Re: LG 47LE5400 LED TV Wont turn on, long beep, what to...
Dues the set have a blinking red light pattern? If so, make note of the pattern and call LG Tech support. Or you have power board problem. Find a honest TV Tech.
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Fault at its main digital board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. http://electronicshelponline.blogspot.com/
In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.
Before going further; try a hard reset first. If it does not help you, replace the main digital board. There are two methods to reset TVs. The first is simple to do; a Hard Reset. The other is somewhat skilled; is a Factory Reset (System Reset). To make it a hard reset, just unplug the TV from AC mains wall socket, and re-plug it back after 15 minutes or so. If you do this by overnight is better. This procedure will make it a hard reset. If you want to make it a system reset [Factory Reset]; you have to enter its service mode option, and select the factory reset option. If you wish to get some details; visit the site linked here.
If it's a led tv and if you have sound and, also, if you can see the picture with a flashlight very near on the screen in the dark, that means your backlight or your inverter circuit that control the backlight are defect. Good luck,
it needs proper trouble shooting, just let me know if you will be the one to do the job.so i can give you other step to trouble shot the tv since it needs proper tools and device then make sure you have the knowledge in electronic repair.
Hi, the main board of your TV is dead This can be cause by open fuses surface mounted you have to take out the mainboard and check for any open fuses specially from the main processor IC replace if you found any.you can also order a replace board at shoppjimmy.com just follow this link search for brand and model good luck
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