Why is the picture quality on my Insignia NS-39D40SNA14 good on some channels but poor on others?
- UuhillSep 3, 2025
If the picture quality on your Insignia TV is good on some channels but poor on others, and the sound is good, the problem might be a weak signal from the broadcaster or cable TV provider. If you're connected to cable or satellite TV without a set-top box, consider installing one to improve signal reception and picture quality. Contact your provider about upgrading to a set-top box.














