HV shut down Panasonic PT-47WX53G Chassis AP825

Hello guys great site. I have a Panasonic projection PT-47WX53G that when hit power button the standby powers supply clicks on you can hear the audio hiss, when channels turn you can hear the mute in the audio hiss telling you that the tuner is functioning, but however the HV circuit comes on for 2 to 3sec then shut off. When it does this you hear the relay click on then off. Please help I am an Electronics tech that specializes in Home and Car Audio. 1st attempt on TVs. I have the tools and safety equiopments. Please help.