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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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It is an indication of faulty on the vertical section.
Nowadays tv will automatically shuts off if you have a problem on the vertical output I.C. to protect your tube for burning the phuspor right on the middle of the screen which will affect on the picture later on.
I've adviced you to look for a qualified technician to isolate and replaced the faulty parts and do resoldering for some dry joints because sometimes dry joints damaged the parts.
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replace the lamp only takes few min make sure you get right one for model of tv the LAMP MODEL number will be on OLD LAMP the tv will work and sound will come back hope this helps
TV shutting off automatically means its a problem with the Lamp. Contact Pioneer or any local tech shop or Best buy and get the same replaced. Turning off after specific time : Go to the timer option and disable the Automatically Switch off option. This will resolve the issue. Please let me know if it worked. If you need the user manual or instruction manula please click on the link below http://www.generalmanual.com/Televisions/Sanyo-DP19647-Wide-Screen-Integrated-Digital-LCD-HDTV.htm. Hope this will be of help to you.
TV turns on but doesn't stay on goes in and out then blank screen. LED light stays on during the entire time
your problem is called hunting
you can check power supply of your tv .It common problem in Philips T.V.
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