If your TV screen has horizontal lines, it can be confusing and frustrating. Here are the common causes and troubleshooting tips to hopefully fix the issue.

"Persistent horizontal lines appear on the screen [of a 24-inch iMac], which significantly hampers the usability and visual appeal of the device," wrote user latVm on Apple's discussion forum.

If your TV screen has horizontal lines, it can be confusing and frustrating. Here are the common causes and troubleshooting tips to hopefully fix the issue.