Lines all across tv could not see menu, now cleared up?

VIZIO V585 -J01

Horizontal lines all over screen different colors(light green, pinks, white) flickering and restarted itself. Turned off turn on, unplugged from outlet, tried different outlet, checked all connections, unplugged all connections, soft reset then hard reset. Put in Vizio Service ticket and plugged back in original outlet. Once service ticket got put in since still under warranty. It started working correctly. Should i keep the service swap out ticket or not. Confused.