Panasonic Plasma Pop and Poof!

@avocewithahammr for now follow the Panasonic Flowchart and check the power board fuses

I never understood why Panasonic and Sony had to come up with their own terms. The A-board is the main board. The one that has the AV connections (3rd picture you've posted) Check the voltages going from the power board to the main board (P6 to A6) on the power board connector. Carefully when you measure those since your TV will have to be on and you do not want to accidentally cross multiple connectors.

AC is applied to the standby circuit in the P board and produce STB5V. The STB5V is provided to the A board via pin 6 of connector P6. If the STB5V is missing, the TV is in “No power " mode.

You also have the legend for the connector printed on your board. Always verify the right pin and see if you get the voltage as needed. You will have to do that with your TV turned on, since I don't think it'll turn on, the issue may just be the power board. Of course, I am known to have been wrong before (often) so it may just show the right voltages. Let us know what you come up with. yes, the voltages are DC voltages. Multimeter to DC, set range to something like 50V. Now black probe to ground and red to test the contacts.

The fuses on the power board are AC voltage. Set your meter to 300-400VAC and measure one probe to either N or L (depending on which fuse you are testing) on P9 (AC connector) and the other on each leg of the fuse. Or you can leave the power off, disconnect the power cable. Then set your meter to continuity and check to make sure your fuse have continuity. As always, you are dealing with a live circuit and those plasma TV's can pack a punch. Keep your fingers (as well as kids, pets etc) of the contacts :-)