Hey bud - were you by any chance barefooted and standing on a concrete or ceramic tile or terrazzo floor? I know that on older washing machines with bad grounds, you stood a good chance of getting knocked on your *** under these circumstances.

Quite likely, the television chassis is seeking the closest route to ground and it looks like you might have provided a shortcut. I know my old Zenith 6V27 Tombstone radio will light up my life if I touch the chassis barefooted because I have terazzo (stone) floors in my living room.

There's nothing inherently wrong with it. It's just the nature of the beast.

Hope this helps - Fredro