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Repair guides and support for televisions manufactured by Sony.

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No Picture. Sound, Backlight, Green LED is On. KDL-48W590B Year 2014

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Which board controls my video display?

Opening the back panel I have a:

  • Main Board
  • TUS Board
  • LDHM Board

The TV internals look exactly as this YouTube video.

https://www.youtube.com/watch?v=zqDEoDZq...

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Replaced the main board today to find the same issue as before

par

I have the same problem. Replaced both the main and tus boards...no change. Just ordered a new ldhm board. Hoping that will be the fix.

par

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Did some looking around, and the problem may be being caused by your Main board.

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Thanks for the reply. I saw a very vague troubleshooting chart pointing to the main board as the faulty video/picture. It does look like the HDMI inputs are attached to the main board. All older Sony Bravia’s say the TCON is responsible for a faulty picture. I can’t tell if this 2014 model is equipped with a TCON board.

par

Replaced the main board today to find the same issue as before

par

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Teerev that is why it is important to post images of your TV. That way we can see what you see and we can always help with the identification of boards , parts etc. Remove the back of your set and take some pictures of the layout as well as the different boards. Use this guide https://www.ifixit.com/Guide/Adding+imag... that. It will allow us to see what you see. Then start by using a Triage method, determine which could be primary cause and which could be secondary. Something like this

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after that proceed with a general approach to the troubleshooting of No Video like this

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The rest will then depend on your findings. BTW your set has a T-con board and I do believe it is actually behind your BAXL board (for now my money is on a bad T-con board ;-)

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TeeRev sera éternellement reconnaissant.
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