Hi @Nathan Jump,
Is the TV’s power LED on or blinking at all, you didn’t say?
If it is blinking here’s a [https://www.manualslib.com/manual/1576078/Panasonic-Th-37pv60e.html?page=27#manual|link] to the Power LED Blinking timing chart, taken from the [https://www.manualslib.com/manual/1576078/Panasonic-Th-37pv60e.html#manual|TV service manual]
If it is blinking continuously without a pattern this is the most difficult problem of all to find. You would need to start with the power supply and work you’re way through the TV as to what the problem may be.
If there is a pattern to the blinks it is easier as the blinking timing chart tells you where to check first.
If there is no power LED then here’s the [https://www.manualslib.com/manual/1576078/Panasonic-Th-37pv60e.html?page=28#manual|link] to the ''No Power'' troubleshooting flowchart that may help.
The manual shows how to remove the boards from the TV and also has full schematics which is a great help.