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3 time blink sony - Sony 40 KDL40EX520 LCD TV what is the problem

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Try a power reset first. 3 flashing light is bad main logic or power board ,check for standby volts if ok replace main logic board

Posted on May 14, 2017

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Posted on Jan 02, 2017

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http://electronicshelponline.blogspot.com/

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http://www.scribd.com/doc/46056922/KLV-23S200A-and-Other

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A lot of good info including taking set apart correctly.

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SD TECH

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