Mainstream QLED TVs are often replaced rather than repaired once they're out of warranty, especially if backlight or mainboard work is required. Common failures include power boards, mainboards (streaming/HDMI, backlight LEDs, and occasional T-CON issues.
If the panel is intact and diagnosis points to a single board replacement under the threshold, repair can be reasonable, particularly for a bedroom or secondary TV. If you see persistent lines, widespread dead pixels, or screen damage, replacement is the safer call.
Also consider software: Fire TV features and app support can influence whether keeping an older set is worthwhile even if hardware is repairable. Price is based on the model's listed retail pricing (list price) from a price-tracking source; real-world sale prices can be lower, which makes repairs less attractive when close to the threshold.