After Power Surge, TV won't turn on

I have an LG TV that won't turn on after a Power surge.
When we plug it in the Red Light turns on at the bottom, but pushing the button provides no response. I've never had a remote for it along with my phone no longer having an IR blaster so I cannot check that method.

Model Number: 47LB5900-UV

I have checked the Power board along with the Main board, there's no visible damage.

When plugging it in with the back cover off I hear a faint buzzing sound, but I'm unsure if that's just the components or not as the buzzing isn't able to be heard with the cover on.

Edit to add photos: