hitachi 50hk5600 problem with display

[wolf1976]

hi
i have the above tv and the display starts distorts the display at only in applications like you tube
after and on the didital channels
now without connect the antenna only the image of itsselfs tv i have the image i have in attach
i have read in another forum someone else with similar problem with mine changes tcon card and motherboard and the problem remains
can you tell me someone what is the reason that can causes that problem ? is the same the sisplay ?

[Diah]

as usual 50 size Panel always rubbish and gate Transistor got bad

[Davi.p]

Try press hard on the cpu then watch youtube if it improves..