Samsung PN50C550 single horizontal line

[kf4rca]

That's a plasma. I'd check power supply voltages first.

[YamahaFreak]

Originally Posted by kf4rca

That's a plasma. I'd check power supply voltages first.

I'm not sure how the power supply could be at fault. The only defect is that single pixel dead line, and the power supply has already been replaced and verified working.

I'm thinking it might be a buffer issue. Otherwise, I'm out of ideas.