Power display flashing lights flashing

I now display the called party, alone (not connected host), the flashing lights flashing, and after a few out, has not been on display screen, even the “no input signal” no.Mainframe connection, the called party after the The normal operation of the host can also hear the sound of D, but no display screen, connect with other people's display screen can be seen after the host, have to point that maintenance was normal to start and see pictures of errant called upon to help solve the speed Yes problem, I would like to detail the solution ………

display machine relating to the button.Clearance can be The machine will power button lamp lights out.There can be allocated to plug the power or the power supply.