"Samsung TV not working" can mean five different problems, so the fast way through is to name the symptom first and go straight to its fix. But there's one reset worth doing no matter what's wrong, because it clears a surprising share of glitches on its own.
Do this first — the power reset
Unplug the TV from the wall and leave it unplugged for at least 30 seconds (a full minute is even better), then plug it back in. This is a true power drain, not the same as turning it off with the remote, and it clears stuck firmware, a frozen input, and a hung Smart Hub. If your symptom is vague or intermittent, this fixes it more often than anything else.
Then match your symptom
No power / no standby light at all Try a different wall outlet (skip the power strip), check the cable into the back of the TV, and look for any light or click. If it's truly dead with no light, that's a power-board issue. See the deeper steps in our guide on a Samsung TV that keeps restarting or won't turn on.
Powers on but no picture (black screen) If you hear sound but see nothing, or the menu works but an input doesn't, it's a backlight or a signal problem. Our Samsung screen-problems guide shows the built-in Picture Test that tells you whether it's the panel or the signal, and the HDMI "check cable connection" fix covers a dead input.
Picture but no sound, or sound from the wrong place Check the audio output (TV speaker vs external) and any soundbar connection. If a soundbar's involved, our Samsung eARC/ARC fix walks the audio chain.
Apps won't load or Smart Hub errors That's a network/Smart Hub issue, not a hardware fault — set a public DNS and reset Smart Hub. Start with the Samsung error 107 fix, which covers the most common cause. If apps specifically won't install, that's usually storage rather than network — see why your Samsung TV won't download apps.
The TV is narrating everything out loud Not a fault at all — that's Voice Guide, an accessibility feature, and it's easy to switch on by accident. How to turn it off.
Samsung TV Plus channels are missing or won't play TV Plus has its own failure modes separate from the apps — see Samsung TV Plus not working.
If nothing above fits
A factory reset is the last resort: Settings > General > Reset (default PIN 0000). Note your picture preferences first. And on stubborn cases, turn off Instant On before the power drain — that fast-boot feature keeps the TV half-powered, so a normal unplug doesn't fully clear it.
FAQ
What's the one fix that helps most? A real power drain — unplug for 30+ seconds (Instant On off first for stubborn cases). It clears the largest share of random glitches.
My TV has sound but no picture. That's a backlight or signal issue. Run the Picture Test (Settings > Support > Device Care > Self Diagnosis) to tell which.
Apps won't open but the TV otherwise works. That's a Smart Hub/network problem. Set a public DNS (8.8.8.8) and reset Smart Hub rather than touching the picture settings.
When should I factory-reset? Only after the power drain, symptom-specific steps, and a firmware check. It erases your settings, so it's the last move, not the first.