How to fix dotted lines or stripes on Insignia NS-39D400NA14 TV screen?
- JJacob HaneySep 2, 2025
If dotted lines or stripes appear on your Insignia TV screen, ensure the antenna or cable TV is correctly and securely connected. If you are using an antenna, the digital channel signal may be low, so adjust the antenna or use a high-directional outdoor/set-top antenna with an amplifier. Make sure the video cables are securely connected, and try a new set if the issue persists. Other devices may be causing interference; turn them off one by one to identify the source and move it away from the TV.