SOURCE: Blinking Red Power Light
You can also try a hard reset: Unplug TV from AC mains and remove all cables from TV. Wait about 30 minutes and replug to AC power and redo the cabling. Switch on the TV and see if it works..Try to plug different power source if this fails ,then you give it service center to get it fixed or you like DIY then :
I would recommend going to the following link and getting the service manual so you can see first hand disassembly instructions and testing proceedures. Its only 10.99 and they email it to you shortly after purchase. The manual is a valuable resource as it will have part numbers in case you do need a new board. heres the link.
http://servicemanuals.vstore.ca/
SOURCE: Sharp LC-37D44U I have replaced the
Since you have replaced the boards and the problem still persists,then maybe bad lamps could be the culprit.but i think its time for you to get a new TV set as the cost of repairing may have surpassed the cost of a new TV set.
You either have a faulty 24vdc circuit in the power supply, defective inverter, or a bad back lamp(s). The inverter boards will be on either the far left or far left and far right, if your set uses two inverters. Proper troubleshooting will need to be done before the fault is isolated.
Sounds like there's a short in the power somewhere. I'd start with unplugging it then checking to make sure all cables and/or cords are properly connected (i.e. make sure there are no loose cords anywhere)
SOURCE: lg led tv backlight
Fault with its main 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.
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