That's the board's number and yes...you can GOOGLE it to find suppliers of that part.
If your husband has a voltmeter ---
Now, there are about 5 different power supplys for your TV set. But ALL have the SB standby voltage marked on the plug that connects the power supply to the main board.
And the power supply is real easy to find....it's the ONLY board that has the power cord connected to it.
Trace the cord to the board...then look for a large cable that connects directly from the power supply to the main board I had you get the number from.
If you have the 5.2 volt SB wire with 5.2 Volts on it, then your power supply is ok, and the main board is bad.
It has to be one or the other....that's what makes your TV turn on, and it isnt' turning on.
TOO Confusing for you ??
Take a picture of your TV's entire chassis -- all the boards on it. Then I can do something like THIS to help you --
Of course, I'll ADD the cable to look at on yours, and research the power supply and get a close up of the cable between the power supply and the main board.
But right now, I'm pretty sure you're going to find that the 5 Volt line is ok, because your TV DID LIGHT UP THE LAMPS until it got unplugged and reset.