Samsung TVs have a service menu, it has a factory reset option, this is the most complicated option to reset the operating system to factory settings. There is a risk of disrupting the normal functioning of the TV when using this reset, and here you can read why.
Risks of using factory reset in the engineering menu
There have been cases when the picture became inverted, purple or green after such a reset. The thing is that a factory reset returns the TV to its original base settings. Now I will tell you why this happens. The following description of the situation is fiction and all coincidences are coincidental.
The programmers who wrote the OS were asked to write firmware that would use the TCL screen as the base display; they did so, and the firmware was installed on the motherboard. But then an unforeseen situation arose: TCL was unable to provide the required number of displays. BOE, in turn, agreed to provide more displays, but each type of display had a different T-CON control board, which required a change in the algorithm for interacting with the motherboard. But the motherboards came with a program for TCL’s displays.
On the assembly line after the assembly of the TV set is added another operation – manual change of the display type, to do this you need to open the service menu and change the display type. Such a TV set is delivered to the customer, but it has not the original OS version, but a modified version with manually changed display type.
Using the service menu to return to factory settings absolutely resets all settings, even those in the engineering menu. After resetting the settings, the default display type is set to TCL, but it’s actually BOE, and since the display type doesn’t match the settings, there are image problems.
These situations are rare, but you can be unlucky and it can happen, there have been cases where after a factory reset through the engineering menu the image took on an unnatural color, turned green or flipped, HDMI ports stopped working.
Therefore, performing a factory reset through the engineering menu has its own risks.
Minimizing the risks of a factory reset via the service menu
If you do have to reset your TV through the service menu, do the following to protect yourself.
Take a picture of all the menu screens – there are about two dozen of them. If you have problems after the reset, you can compare the settings set after the reset with the settings set before the reset and thus restore normal operation of the TV.
Translated with DeepL.com (free version)
