Colour tv changed to black and white

[Guest]

Hello,
My Panasonic Viesa which has been working beautifully in colour suddenly produced a black and white picture - tried all sorts of button pressing - disconnected everything and tried again - all to no avail?

 

[hang-the-9]

What connections are you using? Is there no color on any input from different sources? If so, need to bring it to a repair shop.