Question about Samsung 40 in. Flat-Panel LCD HDTV

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Samsung 40 inch LCD takes longer and longer to turn on, 5 minutes now, screen black with light under name on; once on line defects appear on screen. Sometimes when turns on only random lines instead of picture. Once on picture otherwise ok. Noises present during turning on process also. Thank you.

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Common problem you have a bad cap or 2 in your power board this board is the one where tour ac cord plug into these can like caps will be puffed up on top the values are written on the sides on the device replace them and your good to go

Posted on Nov 18, 2009

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Posted on Jan 02, 2017

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Hello,
It sounds by the description that your tv has a defective T-CON (Timing Control) Board -this is evident by the 5 flashes and the fact that the screen was working ok, then going black then repeating.
The board can be bought usually on ebay but, only if you feel comfortable in replacing it yourself, otherwise a sony service tech needs to be called to repair this!
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