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Repair guides and support for televisions manufactured by Sony.

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Tv flashes 6 times red light. Help me figure out BL_ERR wire from diag

I saw some YouTube videos & figured its a bad led. I don’t know how to replace that led so i want to temporarily fix my tv by grounding that BL_ERR wire on the main board.

Plz help me figure out BL_ERR wire for my tv. I have a diagram from manual of this tv XBR-55X850D & it says 12 in yellow background & 21 in green background. What does that mean & how to count & get proper wire to ground it ?

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@oldturkey03 thnx for the response. I think i was not clear earlier. My tv’s LED’s works just fine, I don’t see any failure in the display. Cause tv does boot up with google boot up screen & after 5-10 seconds the screen turns off & i get 6 red blinking lights. What i am trying to do is bypass tv’s BL_ERR . So that it won’t check that if backlight is working correctly or not & won’t disconnect power to the tv. So it’s a bypass according to YouTube videos. What i want here is to know how to count 12/21 from the pins, so that i can ground it & tv starts working as usual.

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@blockr22 I am confused by what you are trying to do. The 6 blink error code is a backlight failure error. You can't bypass that. You can check and see if this is a backlight strip or a power board issue but you can't bypass this. I cannot speak for the YT video you are talking about nor do I have the schematic. This TV "knows" when the back lights do not come on and produce the blink code. Even if you were to turn the blinking "off", you still do not have a backlight.

Post some images of your boards. That way we can see what you see and try to find the places where to measure the power to your LED's iFixitでの質問に画像を追加する方法

Update (11/07/23)

@blockr22 it's actually straight forward. All he is doing is, remove the wire from the pin on the power board connector BL_ERR and connects it to ground. If you want to do this on your model, plug the cable from the power board to the main board back in and post an image of that with your Question. WE can then show you where to route that.

As said in this video, the TV is having backlight issues (bad MOSFETS). Removing the BL_ERR line will only allow you to use your TV until the backlight will no longer function. Could be in a day or in a year. Consider fixing the power board or replacing it, if your TV has the same MOSFET issues.

It is not a repair just a delay of the inevitable :-(

Update (11/07/23)

@blockr22 sorry, I could not get close enough to the wires but found the right connections.

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Now it is up to you to disconnect the wire that connects to #12 That is the wire that you then connect to any ground. I would use a screw that connects to the frame

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@blockr22 post a close up of CN9000 as well as a link to this YT video. I figured that is what you were trying to accomplish, which will of course only work, if your TV does not have any backlight issue ;-)

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@oldturkey03 i got two different video’s but the size of the tv is 65inch whereas i got 55 inch. model number is the same as my tv. in the comments i can see someone with my tv also fixed his tv with this method.

https://youtu.be/raSX4P8uGpU?si=5iVDSm-V...

https://youtu.be/KMXMWX1zlNQ?si=kKMQtmAs...

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@oldturkey03 hi, is there any other way that i can contact u. So that u can guide me how to do it ?

Also I didn’t understand what u want me to do here. Which wire to plug in or out & where to ?

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@blockr22 sorry but we always keep repairs and solutions on here. It's only fair to the community. all I need to see is the power board (the brown board) with all the wires plugged in.

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@oldturkey03 sure, i will post new pictures with all the wires plugged in

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Hny-B-King さん、ありがとうございました!
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