I would like to know how common it is for the main board to be the reason for a no power scenario. When the power is turned on, the relay clicks and when I check my voltages, all are where they should be for a few seconds then they quickly go to 0V. The VA only goes to 0.5V while the VS goes to normal voltage then back to 0v. Since the VA is low, is this a VA cct issue, or will it be ok once the main board is connected.
What I found is when I connect the power supplies into the tv and connect everything, I still only get the initial spike then drop to 0v. My VS goes high then 0v, and VA still 0.5V and no change. I found that I am not getting the VS_On signal from the main board IC4015. When I disconnect the main board and leave everything else connected, my voltages come back for a few second then 0v.
Could this be a main problem or power supply?
What I found is when I connect the power supplies into the tv and connect everything, I still only get the initial spike then drop to 0v. My VS goes high then 0v, and VA still 0.5V and no change. I found that I am not getting the VS_On signal from the main board IC4015. When I disconnect the main board and leave everything else connected, my voltages come back for a few second then 0v.
Could this be a main problem or power supply?
