Samsung LE40A656 TV strobe - flickering issue


Novice Member
Hi all,

I’ve got a Samsung LE40A656 TV that’s showing a flickering issue. The backlight flickers like a strobe. You can also hear it pulsing. The flickering gets worse when lowering the backlight setting. When turning the backlight all the way up to 10 the flickering stops and the pulsing can no longer be heard. Everything else seems to work just fine. I’ve already tried out a couple of things with no success:

  • The problem appears on all channels and input devices.
  • I’ve switched off all special features
  • Using a different power cable and a different power outlet makes no difference
  • I’ve tried different refresh rates and resolutions on the input device
  • I did a “power cycle” by unplugging the TV then pushing the power button
  • I did a factory reset

I have uploaded a video of the issue so you can see exactly what's happening. In the video you see me increasing the backlight setting from 0 to 10.

Does anybody have an idea what might be causing this? Any chance it’s something that can easily be fixed?

Thanks in advance!

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