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Old 07-03-2020, 11:39 AM   #1
jmandawg
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Default Hisense 50K360N screen going on and off when changing between picture modes

Hi all,

I have a Hisense 50K360N when switching between picture modes, certain modes will cause the screen to start flashing to a black screen every second. Changing the adaptive backlight setting or chainging the backlight level from 100 to 99 will make it stop, i can then set it back to 100 and it will be fine. But when i switch between the picture modes it happens again.

Any ideas? I watch a few youtube vids and it seems like it might be the power supply or backlight. I did take it apart and look at the caps and they all looked fine.

Any suggetions?

Thanks.
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Old 07-03-2020, 12:46 PM   #2
nomoresonys
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Default Re: Hisense 50K360N screen going on and off when changing between picture modes

You should not run the backlight level at 100, should set it to as low as you can tolerate the display to keep the backlights from burning out, it will extend their life as well.
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Old 07-03-2020, 02:09 PM   #3
budm
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Default Re: Hisense 50K360N screen going on and off when changing between picture modes

Yep, turn down the backlights level to as low as possible on all modes and on all inputs, and recheck them again after turning the TV of and then back on to make sure the settings stay. It sounds like the LED's are failing at full drive.
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Old 07-04-2020, 09:25 AM   #4
jmandawg
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Default Re: Hisense 50K360N screen going on and off when changing between picture modes

thanks for the help guys. Unfortunately if you try to modify one of the presets, it copies that preset into the custom settings, so the named presets won't save changes.

Luckly i found in the service menu there is an option for max backlight, i changed this from 255 to 200 issues seems resolved for now.

Thanks again.
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Old 07-04-2020, 02:48 PM   #5
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Default Re: Hisense 50K360N screen going on and off when changing between picture modes

Yep, you need to do it from the service menu on some tvs, thanks for feedback.
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