Direct answer
Black bars can be correct for the program’s aspect ratio. If every source is undersized or cropped, compare the TV picture-size setting with the source device’s output before using zoom.
What this covers
- The observed symptom matches this record
- Customer-accessible settings, connections and external components
- Diagnosis before reset, deletion or component replacement
What it does not cover
- ×A model-specific error code with a different documented meaning
- ×Internal electrical, battery-cell, gas, refrigeration or sealed-component repair
- ×A guarantee that every model exposes the same control label
Capture the exact symptom
ReversibleCheck whether menus fill the panel and whether bars appear on every channel, app and HDMI source.
Run the smallest isolation test
ReversiblePlay known 16:9 content and compare the TV’s Fit to Screen/Just Scan setting with the source resolution.
Correct only the proven cause
ReversibleUse the unscaled or screen-fit option; avoid zoom that cuts off captions or score graphics.
Verify before changing anything else
ReversibleTest both native TV video and one HDMI source for correct circles and uncropped edges.
Evidence ledger
Sources behind this answer
Visible sources support the visible claims. Home Product Support records the publisher, the fact used and the review date; community reports can suggest an issue but do not become a published fact on their own.
Exact questions
Common follow-ups
What should I check before resetting anything?+
Check whether menus fill the panel and whether bars appear on every channel, app and HDMI source.
What is the safest isolation test?+
Play known 16:9 content and compare the TV’s Fit to Screen/Just Scan setting with the source resolution.
When should I stop troubleshooting?+
Service is unnecessary for bars encoded in ultrawide movies; stop if the panel image is physically shifted or damaged.
Answer for the exact device and software version shown above.