Good morning, my name is ***** ***** is the model number of the TV?
This sounds most likely that the secondly PCB has failed, which is responsible for controlling the display on the TV itself.
As such this will need to go to a service centre for repair, if you provide me with your postcode I can recommend a suitable service centre in your area.
I would suggest you use Alan at A1 Repairs, his number is ***** 082156, and should be able to come out to you tomorrow.
He charges £55 call out, which includes picking up the unit, diagnosing the fault and quoting for repair. If you proceed with the quote they will deduct the £55 off the cost of repair.