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Why are there vertical lines on my screen?

Vertical lines (mostly red, some green) suddenly appeared across my screen mid-show. They remain on any channel, any input, and after turning the TV on/off. My TV is about 12 years old but has functioned great until now. Any idea what the issue is?

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Update (03/12/2020)

Hi @jayeff, it’s KDL-40V2500

Ответ на этот вопрос У меня та же проблема

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Hi @pcal6vb ,

What is the model number of the TV?

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@pcal6vb

that will depend on what those lines look like. Most common reason is a failed T-Con board followed by a bad main board and ultimately a bad panel. Post some good pictures or what your TV shows so we can see what you see. Adding images to an existing question

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Hi @pcal6vb ,

Can you view the menu screens OK or are they also faulty?

If they are also faulty, since there are no error code LEDs associated with the failure, looking at the service manual the problem could be a faulty BU board, a faulty cable or cable connection between the BU board and the panel or a faulty panel.

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Hi @oldturkey03 oldturkey03,

I added the image above in my question.

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@pcal6vb dang this could be a panel error. Try a new T-con board and see if that makes a difference.

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Pcal6vb будет вечно благодарен.
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