You should know that Samsung smart TVs and monitors running the Tizen operating system have a hidden menu for engineers. The Samsung TV has two menus for controlling the TV:
The standard menu is accessed by pressing the Home button on the remote control; after pressing the Home button, you can access the TV settings.
The Engineering (hidden) menu is accessed by pressing certain buttons on the standard remote control; there is a particular repair remote for service technicians. These are the TV settings, similar to the BIOS settings on a computer.
Engineering (hidden) menu vs. Samsung Smart TV user menu
A modern TV is a rather complex device. To control, customize, diagnose, and repair it, such as replacing the display or motherboard, it is necessary to control the TV at the primary command level. For the average user, access to the standard menu is sufficient. These two menus interact with each other.
Samsung TV hidden (service) menu
What is the service (engineering) menu? This is the menu to set how the operating system is loaded. This menu determines such settings as the size and type of the display; it determines what voltage should be supplied to the screen backlight, which modules are active and which are not, controls the output power of the audio amplifier, and much more. A particular line of TVs uses its own OS modification, so the appearance and number of settings may differ.
How to use the Service Menu
It is essential! Incorrect use of the settings can cause the TV to fail; it simply will not be able to load the OS and start working. Therefore, only change settings if you know the purpose. For example, if you set the wrong display type, the picture may be upside down.
And if you set the settings to a smaller screen size, for example, you have a 65-inch TV, and you set the screen size to 50 inches, the screen will overheat, and white spots will appear on it after a while, and if you set the wrong image processing algorithm, the TV screen will turn green. Please take a picture of each menu screen when entering the Service menu so that you can restore the desired settings.
Next I will tell you how to enter the service menu and what buttons to press.
User menu on Samsung TV
This is the second level menu; you can’t break anything in this menu; it is available to the regular user. This menu appears when you press the Menu or Home button on the TV remote control and then select Settings. Only 10-20% of the TV’s settings are available in this menu, and service commands are usually unavailable. The manufacturer believes that this is sufficient to use the TV. In this menu, you can control picture settings and volume, launch applications, and change signal sources. In general, this is a standard TV menu.
Samsung TV service menu options
The TV service menu opens up new possibilities for your TV. The manufacturer does not write the operating system for a particular model TV. There is one operating system, and it is modified for a particular line, such as QLED or OLED TVs. The operating system is the same for all TVs, but the settings differ depending on the TV series. And knowing how to change the settings, you can, for example, turn a 7-series TV into an 8-series TV or enable known closed functions. For example, the service menu turns off support for intelligent remote control or the ability to connect bluetooth headphones.
Service Menu Manual (Quick Guide)
When you enter the Service Menu on the first screen, you will see the main parameters of the TV. On the left is the menu and on the right is basic information about the TV. Let’s look at an example of what information you can get from the first screen.
- T-PIMACUS-1098 are the board numbers inside the TV, the picture shows the secret menu of S95B TV. Samsung OLED TV has three boards (power board, main board and display control board).
- TIZEN- TRUNK2022-PontusM-HOTFIX-RELEASE_20220325.1: this is the operating system version, it is Tizen 6.5, OS working name TRUNK2022-PontusM-HOTFIX, this OS version was released on 03/25/2022 current modification 1.
- BT version: this is the Bluetooth version, if the version is listed, then the TV has a Bluetooth module.
- E – Manual: OSNATSCB-3.2.0 is the version of the electronic manual in the TV.
- E-POP version: This is the version of the in-store demo program used to promote the TV.
- EDID (Extended Display Identification Data): Automatic transfer of display information is used when you connect the TV as a monitor. In our case, it works.
- HDCP: whether the encoding of the signal transmitted via HDMI works.
- Option 55a4ouqob: The part number of the TV.
- FRC: 120Hz display frequency.
- DIMMING: What kind of dimming system is used.
- Then there is information about components, WiFI module number, Mac addresses, and so on. But probably the most interesting information is the model number of the TV.
- Model: QN55S95BAFXZA
- Factory reset in production: Number of resets through the service menu.
- Date of purchase: The information was obtained when you connected the TV to Samsung servers after checking the model and serial number of the TV against databases. You may have logged into your Samsung account from the TV or registered the TV on the Samsung website. The date when the TV was registered, or you logged in to your Samsung account from the TV appears in this field. If you have not done so, then there will be dashes.
If you have an LED or QLED TV, the start menu will have information about the display model, as your TV may have displays from different manufacturers. In case you didn’t know, Samsung won’t make QLED or LED displays after 2021. If you go through the menu, you can find many more exciting things; here is a short list of available information about the TV from the service menu.
- Date of purchase
- TV model
- The version of your TV: This information is needed for repairs; you will be able to determine the manufacturer of the components used to assemble the TV.
- TV base model
- Digital tuner manufacturer
- Wall mount format, precisely size, e.g., Vesa 200×200
- Wi-Fi region
- How long the display has been on (the time the TV has been on in hours since it was first turned on)
- Year of development of the original version of the TV
- HDMI port standards and HDCP support
Testing the TV using the Service Menu
You can use the Service Menu to change the TV’s settings and modes and to test the TV’s components. This is necessary for technicians to diagnose the TV.
- You can turn the sound amplifier on or off and change the output power level because one TV may have 40 watts of output power, and another model may have 60 watts and more speakers.
- You can switch the TV to hotel mode, shop mode, etc.
- Turn on/off different TV modules
- Disable FRC screen mode (backlight blinking)
- Perform a screen check using the operating system’s test tables. The TV will pass the test to check for broken pixels and correct display of geometric shapes. Various images will be displayed, allowing you to check the quality of the display visually.
- Calibrate the screen
- Adjust the white balance
- Check the level of the TV’s primary colors.
- There is also screen maintenance and screen cleaning for OLED TVs to remove residual images.
How to access the TV’s service menu
To access the hidden menu, you must have a standard remote control for your TV (a picture of a standard remote control is shown below). The standard remote has more buttons; some are used to access the service menu. The Smart or One remote does not work to access the service menu.
The only way to access the service menu is to use the universal or particular engineering remote. If you read that you can access the service menu using the power button or a program on your smartphone using the virtual remote, this is not true; you cannot access the service menu this way.
Warning: You must use the Service Menu carefully. Improper use may result in the inability to turn on the television. By entering the service menu, you assume full responsibility for the operation of the television at your own risk.
Commands to access the Service Menu on your Samsung TV
How to enter the Service menu, general rules: You may not be able to access the Service Menu the first time. Try several times. The algorithm for pressing the buttons is strictly regulated to prevent accidental entry into the menu. The buttons must be pressed once, and the time between presses is also essential. To enter the service menu, the buttons must be pressed once, not hastily, and not for a long time. Violating the pressing algorithm does not initiate the start of the service menu. If the button pressing algorithm is correct, the Status LED (if present) will continue to blink after the TV starts, which means that the TV is loading the Service Menu software. After 1-5 seconds, the Service Menu will appear on the TV screen. If the Power LED remains on and the Service Menu does not appear after 5 seconds, something has been done incorrectly, and the Service Menu procedure must be repeated.
Depending on the manufacturer of the TV motherboard, software modification, and region, there are several ways to enter the service menu of your Samsung TV. For example, option number one is suitable for TVs manufactured in Europe, and option number two is suitable for TVs manufactured in the USA, Canada, and Mexico. All manipulations to enter the menu must be done with the TV turned off (in standby mode). Press the Power button to exit the Service Menu (turn off the TV).
List of commands to access the hidden menu of your Samsung TV
Again, the TV must be plugged in and in standby mode. We need to have a universal remote control with 0-9 buttons. If you don’t have one, buy one for 2011 and newer TVs. If you have a smartphone with an infrared port, you can use the remote control app on your smartphone. Press the buttons one at a time in normal mode, pointing the remote at the TV.
Each combination is completed by pressing the Power button.
There are six ways to access the service menu, so try them all in order.
- Method 1: INFO → MENU → MUTE → POWER – usually works for European models of Samsung TVs and also works with some LED TVs in the US.
- Method 2: MUTE → 1 → 8 → 2 → POWER – suitable for TVs in the USA.
- Method 3: DISPLAY → P.STD → MUTE → POWER.
- Method 4: SLEEP → P.STD → MUTE → POWER.
- Method 5: DISPLAY → MENU → MUTE → POWER.
- Method 6: MUTE → 1 → 1 → 9 → POWER.
Managing settings, exiting the Samsung TV service menu
When you change the TV settings, the new settings are applied immediately and do not require additional confirmation. Use the cursor keys on the remote control to move between menu items and change settings. To enter a specific menu, press the Enter button. To exit a menu item, press the Return button. To exit the Service Menu, turn off the TV.
I changed the TV’s Service Menu settings, but the TV won’t turn on.
This is a common situation; the Service Menu is designed for professionals. If you select the wrong settings, the TV will not turn on. This usually looks like the following.
- The TV constantly reboots.
- When you turn it on, the Samsung or OLED QLED logo appears (depending on the OS settings) and then a black screen.
- The power indicator blinks a few times, and that’s it.
I’ll explain why this happens. We need help with something about it as the problem is at the OS level. The problem is that the TV does not have a BIOS analog with saved boot commands. The OS does not have a safe mode of operation, and there is no way to reboot the OS. The OS is written to chips at the factory and then soldered to the motherboard. When you change the settings, they are overwritten in the chip, and if you write the wrong parameter to the OS, a critical error will occur; for example, you have a TV set for the USA and installed a tuner for the European standard – DVB. Nothing will happen immediately; you will continue to navigate through the menu. If you turn off the TV and turn it on again, the OS will try to find the necessary drivers to process the digital signal. But there are no such drivers on the TV; the OS has reached a dead end and hangs.
Restoring the TV operating system, resetting the memory in your Samsung TV set
When you change settings in the service menu, the information is stored in the permanent memory chip; if you set a critically incorrect parameter that causes the TV to fail to turn on, you will lose access to the service menu. To restore the operation of the TV set, it is necessary to reset the information in the memory chip, which can only be done physically by short-circuiting the corresponding pins of the chip responsible for clearing the memory. After this procedure, the information stored in the chip will be erased.
After that, you need to reinstall the operating system on the TV. Depending on the technical solutions used to design the TV set, if the primary operating system is written on one chip and all changes during operation are written to another chip when the memory of the chip containing the secondary parameters is erased, the TV set will resume operation by writing new default parameters. However, if all the information, including the operating system itself, is on one chip, you must overwrite the chip memory with the correct operating system version. Doing this takes work; special skills and equipment are required, and the chip must be desoldered from the board. However, buying a new motherboard for your TV is usually easier. This will be cheaper than rewriting the memory chip.
Factory Reset via the Service Menu
I would not recommend doing this, but rather via the user menu. There have been cases where the picture turned upside down, purple, or green after such a reset. The thing is, the factory reset returns the TV to its original, basic settings. I will tell you why this happens. The following description of the situation is artistic, and any coincidences are coincidental.
The programmers writing the OS were given a technical task to write firmware in which the base display is the TCL display; they fulfilled it, and this firmware is installed on the main board. But there was an unforeseen situation: TCL could not supply the required number of displays. In turn, BOE is ready to supply more displays. On the assembly line, after the TV is assembled, another operation is added – changing the type of display manually; to do this, you need to go to the service menu and change the type of display. Such a TV is sent to the buyer, but it does not have the original OS version installed, but a modified one with a changed display type. When resetting to factory settings, the display type selected is TCL, but it is BOE. Such situations are rare, but you may be the unlucky one.