Samsung S90D / QD-OLED: Why I'm Using a Smart Plug to Kill My $2,000 TV
No Samsung, this is not spam. Your forums are dumb.
Samsung S90D / QD-OLED: Why I'm Using a Smart Plug to Kill My $2,000 TV
After fighting with my Samsung S90D (2024 QD-OLED) and trying to get it to behave like a normal smart device, I’ve ended up doing what feels like a last resort: plugging it into a smart outlet so I can hard-kill power remotely.
Why? Because this thing has a habit of randomly staying on, displaying a solid bright blue screen at full brightness, or just refusing to shut off for hours — and I can’t trust it anymore.
What Triggered This
A couple of times after leaving the house, I came back to find the TV still on, blasting a full-screen blue image — and not the usual "No Signal" message. Just solid blue, full brightness, panel fully driven.
Setup:
PC connected via HDMI
PC enters blank screensaver or screen off mode
TV left on HDMI input (signal present, no content)
What the TV should do: detect inactivity, shut off, or go into low-power standby What it actually does: crashes into a blue screen and just sits there until you manually power cycle it
What We Tried First
We tried everything you'd expect:
Auto Power Off: Minimum is 4 hours. Completely useless.
Auto Protection Time / Screensaver: Not available anymore. The screensaver sometimes pops up, but when the blue screen hits? It’s gone.
CEC / HDMI settings: Doesn’t matter. TV sees HDMI signal as “active” and stays awake.
Blank screensaver / screen off on PC: Causes the TV to switch to that awful “No Signal” bouncing message… or crash entirely into full blue.
No internal software setting resolves it. There’s no configurable auto-shutoff, no real standby timeout, no screen blanking logic, and no burn-in protection that actually works when HDMI stays hot.
The Only Thing That Actually Works: Smart Plug
So now, my $2,000 OLED TV is plugged into a $10 Tuya smart outlet, because that’s literally the only reliable way to:
Make sure it’s actually off when I’m not home
Let me remotely kill power if I suspect it’s stuck in this broken state
Prevent a solid blue screen from cooking the panel all day long
It’s not elegant, but it works. I can shut the outlet off from my phone anywhere in the world. The TV loses power, reboots clean next time, and doesn’t sit there wasting energy or nuking the panel because Samsung forgot how to implement standby logic.
Final Thought
For a company pushing “SmartThings” and voice control, Samsung still won’t let you shut their TVs off properly unless you wait 4 hours, press the remote, or pray the HDMI source doesn’t confuse it.
So yeah — smart plug it is. Thanks, Samsung. Great panel. Garbage-tier power logic.
I expect a software OS update that allows Screensaver tuned to the minute, Auto-Poweroff that starts at 1 hour and a way for the TV to detect its stuck in a crash state, rebooting it automatically (My TCL TV did it).
This complaint was powered 90% by AI, because what I actually wanted to write was way, way less polite than ChatGPT.
