Solved Your TV's RS-232 port is a powerful automation tool - how to unlock it (and what it can do)


Borg 386

Borg 386

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The RS-232 serial port can be a valuable tool for more advanced tech users looking to create a truly custom home theater or who want total control over their smart devices.

With some patience and more than a little know-how, you can create a fully automated home entertainment system with timed content, simultaneous broadcasts to multiple rooms, and even diagnostic testing.
Click to expand...

www.zdnet.com

Your TV's RS-232 port is a powerful automation tool - how to unlock it (and what it can do)

The RS-232 serial port on your smart TV isn't just for professional diagnostics. Here's how to unlock it for more advanced programming.
www.zdnet.com www.zdnet.com
 

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Mostly just on commercial and high end models.

My TV cost over 1000 dollars and does not have a RS-232 port.

However, I know the code sequence you input on the remote to get to all diagnostics for the TV.

Screenshot 2026-05-14 074721.webp
 

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This article is typical ZDNet slop. Hey! Some TV's have RS-232 ports... but we won't tell you how to get started talking to the TV.

And all the GitHub repo's linked in the article have nothing to do with TV settings.
 

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garlin said:
This article is typical ZDNet slop. Hey! Some TV's have RS-232 ports... but we won't tell you how to get started talking to the TV.

And all the GitHub repo's linked in the article have nothing to do with TV settings.
Click to expand...
Well I do agree, they could have linked you to some useful articles on how to. Doing a search out of curiosity, I see there are some articles that give you directions on how to use this port & what you'll need to do things.
 

My Computer

System One

  • OS
    Win 11 Pro, Win 10 pro, Win 13.7 Pro Chinese Ver
    Computer type
    PC/Desktop
    Manufacturer/Model
    It's a Dell Dude
    CPU
    12th Gen Intel(R) Core(TM) i9-12900 2.40 GHz
    Motherboard
    Father is bored too...
    Memory
    64.0 GB of transcendental dimensional RAM
    Graphics Card(s)
    NVIDIA GeForce RTX 3070 Ti
    Sound Card
    N/A
    Monitor(s) Displays
    27" Samsung Monitor/Alternative Dimensional Viewing Portal
    Screen Resolution
    Fuzzy after a couple drinks
    Hard Drives
    2 or 3, depending on if it's a night they're arguing about having a "split personality crisis" because I partitioned the drive.
    PSU
    Shockingly active
    Case
    Don't get on my case....man
    Cooling
    Scotch on the rocks on the weekends.
    Keyboard
    Steel Series Lighted Glow in the dark something or another
    Mouse
    Currently being stalked by the cat...
    Internet Speed
    DSL
    Browser
    Defeated by Mario...wait...OH...BRowser...
    Antivirus
    Yep
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