i have a hyundai 42" plasma that is only 18 months old and over the past 2 weeks a black line one inch wide runs verticaly top to bottom of the screen.....next day theres 2 lines next day theres no lines and the screen is fine... then a few days lates it all starts again......any ideas guys????
circuit board defect. Unusual to see crop up at 18 months. The way plasma repair gys usually fix is by taking out and replacing one part at a time unless the service menu gives a direct indication of the failed part.