Question about Sony KDL52NX800 52 in. TV

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I have Sony LCD KDL-52NX800. The screen got noise and went black and finally after sometimes, Tv turned off and red light start blinking 5 times each thre seconds.

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6ya6ya
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Posted on Jan 02, 2017

mistersony
  • 320 Answers

SOURCE: I have a Sony KDL-40V2500 LCD 1080P TV there is no picture the

A 4 flash shutdown indicates a backlight problem. It can be acused by a bad backlight inverter board (the backlight power supply) or by a defective backlight in the panel. There are fuses on the backlight inverter board called "picofuses" which will need to be checked in order to isolate the problem to the board or the panel. If the fuses are good, you have to replace the panel (very expensive!). If the fuses are opne, most likely the back light inverter board has failed.

Posted on Nov 26, 2008

welcomejee
  • 10594 Answers

SOURCE: Sony KDL-46V3000 Bravia LCD Black screen

Please count Sony KDL-46V3000 standby light blinks as there would be interval of 3 seconds between blinks. Let me know how many times light blinks as its an error code.

Posted on May 17, 2009

  • 668 Answers

SOURCE: sony kdl-40xbr lcd tv.. turns on for a second then

I am pretty sure this is a Back Light failure or a bad Ballast. If it is the only fix is to replace the LCD Panel. I would contact Sony at 1800-222-Sony and see if the could help you with repairs and also to get a Factory Service Facility near you to confirm the problem.
Hope this helps,
Skyassoc

Posted on Oct 23, 2009

  • 49 Answers

SOURCE: sony 46 KDL 46S2000 screen went black and the

you can referen the article:

How to Fix a Black Screen at Startup
maybe it can give your some help

Posted on Mar 05, 2010

  • 418 Answers

SOURCE: sony kdl-40s2000 won't stay on and blink red 4 times

That error says backlight failure. It has to be troubleshooted to find out why.

Posted on Apr 20, 2010

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While looking found this:

Found this service bulletin for sony KLD
KLV40EX600 not austalia model but think KDL will be similar

Model No: KDL-32EX400 KDL-40EX400 KDL-32EX500
KDL-40EX500 KDL-46EX500 KDL-55EX500
KDL-32EX600 KDL-40EX600 KDL-32EX700
KDL-40EX700 KDL-46EX700 KDL-52EX700
KDL-60EX700 KDL-40HX700 KDL-46HX700
KDL-55HX700 KDL-40NX700 KDL-46NX700
KDL-52NX800 KDL-60NX800


SUBJECT: Counter measure for Intermittently 5 times standby LED blinking
SYMPTOM: Customer may report that intermittently after AC OFF/ ON (or Deep Standby/ ON), TV will shut down with LED blinking 5 times. If set is placed in Standby, then On, symptom will re occur. If AC is removed, set will work normally when AC restored
CAUSE: Timing mismatch of I2C communication causes interrupt signal inside TV. This causes TV to shut down with error 'Standby led flashes 5 times'

SOLUTION: This is a user correctable issue -
Where possible, please refer customer to Sony Website -(or ) and search for relevant model to download correct update. If the unit is in Workshop, please perform update as per Instructions.

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