Repair guides and support for televisions manufactured by Sony.

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kdl50w800c Screen is black, But sound still present

back light normal, sound normal, there is no standby blinking indication .some time 5times blinking red led what is the problem

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chan ara how do you know your backlight is normal?

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Remove the back cover saw through the chasis holes there is white led light glowing when switch on tv back light on off ok

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Flash light test in front of screen there is no image

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okay this is a toss up between t-con board and main board. Again, I'd start with the T-con board based on your description and the 5 blink

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chan ara the 5 blink error code can have quite a few different causes. Ranging from the T-con (my first suspect based on your description) board to the panel and few things in between. If you have the original TV remote than try to see if this will work on your set:

1. In standby mode, press the following buttons on the Sony remote:

DISPLAY....5....VOL(-)....TV POWER

2. On the left side are the blink codes. On the right hand side is the error count.

3. Under 005, you'll see three listings... TCON, HFR, and P-ID (panel).

4. Let us know what errors your set shows.

If that does not work on your set, then you will have to remove the back of your TV and check the boards. Try to rule out/in the T-con board as faulty. Disconnect the LVDS cable to the T-CON board, the cable between the Main board and the T-CON board, and see if the error code will change. Let us know what the result is.

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chan ara さん、ありがとうございました!
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