Problem with oled tv: no display with thin vertical lines

[Wiggins]

Hi,
My LG oled tv is only displaying thin white vertical lines grouped together when switched on (see picture). Tv is about 5 years old. Is it fixable or is the screen gone?
Any advice will be much appreciated.

 

[RS4]

 

[Wiggins]

 

[chrisc]

 

[mr_b]

 

[Wiggins]

 

[chrisc]

 

[Zilch]

 

[mr_b]

 

[Wiggins]

 

[Wiggins]

 

[msch997]

 

[RS4]

 

[mr_b]

 

[Zilch]