Your TV may not be using its best HDMI settings by default.

Key tips:

• Use the right HDMI port — not every HDMI port supports full 4K/HDR/120Hz.
• Turn on Enhanced HDMI / HDMI Deep Color / Input Signal Plus depending on your TV brand.
• Use a proper high-speed HDMI cable, especially for 4K HDR or gaming.
• Enable HDMI-CEC if you want one remote to control connected devices.
• Use HDMI ARC/eARC for soundbars or receivers to get better audio passthrough.

Bottom line: the right HDMI settings can unlock better picture quality, HDR, smoother gaming, and cleaner audio without buying a new TV.