Guided check
0/4 checkedMatch the symptom, then work through the safe checks.
1. What best matches what you observe?
2. Complete only the checks that are safe for you.
4 user-level checks are available in this guide.Stop immediately if any warning condition applies.
Show stop conditions
- The TV clicks, sparks, smells burned, or repeatedly shuts down
- You would need to open the TV; internal power sections can retain dangerous voltage
Likely causes
- The selected source is not providing video
- The TV software is frozen
- The panel backlight has failed
- A source cable, board, or panel has failed
Quick checks, in order
Open the TV menu
If the menu appears, the panel works and the problem is likely the input or source.
Power-cycle the TV
Unplug it for 60 seconds, then reconnect directly to a known-good outlet.
Change input and cable
Test a built-in app, another HDMI port, or another source device.
Perform a flashlight check
In a dark room, shine a flashlight at an angle. A faint image can indicate backlight failure.
Can you see the TV menu?
The menu is visible
Focus on the connected source, HDMI cable, input selection, or app.
A faint image is visible with a flashlight
The backlight or its power circuit is likely failing and needs service.
No menu or faint image appears
A display, main board, power board, or panel fault may require diagnosis.
Stop and get qualified help when
Do not continue troubleshooting if any of these apply:
- The TV clicks, sparks, smells burned, or repeatedly shuts down
- You would need to open the TV; internal power sections can retain dangerous voltage
Frequently asked questions
Why does sound continue when the backlight fails?
Audio and image processing can keep working even when the LEDs that illuminate the panel stop working.
Can an HDMI cable cause a black screen with sound?
Yes. Test the TV menu, a built-in app, another port, and another cable to isolate the source.
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