Hi,the black colour on the tv comes up pin...

Hi,

It sounds like your driver board/assy boards/video board inside maybe faulty or the cables have come loose.

The driver board/assy boards feed the display panel with the images.

The video board decodes the input signals.

If you switch over to analogue does it still happen, if so my money would be on the driver/assy boards.

Depending on the age of the TV part replacement will be between approx £100 - £200 in the UK.

Seek out an engineer for repair.

Thanks