Thin gold lines from top to bottom of tv screen left side

SOURCE: Blue/black vertical line in the middle of screen

Sounds like a bad connection on a ribbon cable or plug comming or going to the LCD display. This is something you should not try to fix as these circuits are very very fradgile and you can easily break or tear a ribbon cable . Call the manufacturer to get a tech to assit you. Good Luck

SOURCE: red blue green lines down my lcd tv screen

HP-R4252 NOT LCD TV
IF LCD TV has vertical lines try cleaning T-con board to lcd panel cable or replaced t-con board

SOURCE: thin black line across the bottom of the screen

buffer board/can be repaired or new buffer

SOURCE: I have a Samsung LN46A650 LCD TV and recently I

Yes, it's the t-con board, a well know problem in this tv. Here it is
http://www.partstore.com/Part/Samsung/Samsung/LN46A650/Samsung/Samsung/BN8101697A/New.aspx

SOURCE: samsung 32" LED TV Purple Line Horizontally across top of screen

Can you please change the input device to some other you know, works? If you do not notice any problem there, look for the aerial cable going close to any power line or has interference from some other transmissions of any kind nearby.