Fix Auto Dimming for SAMSUNG TV's (2016-2019 models)

***PLEASE READ FIRST***

PROCEED AT YOUR OWN RISK It is unclear that modifying the service menu would affect the warranty of your TV since the service menu is not normally accessed by consumers therefore not listed as a condition that would void your warranty. TAKE PICTURES FIRST before editing the service menu in case you need to rollback the settings. THERE IS NO FACTORY RESET FOR THE SERVICE MENU other than replacing the board. If your TV has a firmware update, the PWM settings WILL RESET and would require to repeat the process.

Combinations to access the service menu:
- INFO, MENU, MUTE, POWER
- MUTE, 1-8-2, POWER
- DISPLAY, P.STD, MUTE, POWER
- SLEEP, P.STD, MUTE, POWER
- DISPLAY, MENU, MUTE, POWER
- MUTE, 1-1-9, ENTER
**If you have a smart remote (the remote with only a few buttons), try using Samsung's remote app. https://www.samsung.com/us/support/an...

ADVANCED MENU
It is quite likely that the 0000 combination to access the advanced menu would not work on TV's Post 2019.
An alternative to access the advanced menu would to hold down the Volume Up or 0 button for several seconds.

Refer to Aldio Tharham who discovered the Advanced menu on 2020 TV's -    • Samsung tv global dimming fix for new...  

I am not a qualified TV repair person. My only troubleshooting experience is with the TV shown (RU7100 2019 Model). If you have a Q series TV or any TV post 2019, the service menu would appear different than what is shown in this video. I can't diagnose the issue or recommend any further steps. There is no official public documentation of the functions of the service menu.

A detailed explanation of Pulse Width Modulation:
https://learn.sparkfun.com/tutorials/...