Samsung LE40C580 - Help diagnose fault?


Standard Member
Hi All,

My Samsung LE40580C went black the other night while watching TV. It's less than two years old, but out of warranty.

Here is the issue:

Audio Works
Backlight is on
No video
All capacitors look okay

When i lightly tap the screen, it goes white for a bit then fades back to black.

Any thoughts? I opened the back up and everything looks fine, nothing burnt or leaking.

Should i try swapping out the AV board? Or is the fact that the audio is working imply that it is fine and it's a panel problem?

Many thanks all, i trust you will be more helpful than Samsung Support.

Last edited:


Standard Member
There must be someone with the smarts out there -

Av Board?

Any help narrowing it down?

If the speakers are working and the backlight is working, surely it cant be the power supply?

If the AV board is picking up a signal that should be okay as well?

Does that mean it's likely the T-Con?

I got a quote from the Samsung TV repair people, gave the symptons over the phone and they seems to think its the power supply? But want £250 to fix, where i can by a power supply board and swap it out for £35...


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