Salvageable from water damage?

Whelp, my son decided to wade into the deep end of the pool on Labor Day, so I had to jump in to save him and didn't empty my pockets. I was in the water for maybe 10-15sec. Even though I have the 1TB version, good thing I saved all media and files to my 1TB SD card or else I'm assuming I'd have lost EVERYTHING. So, SIM card and MicroSD still works in my replacement S10+, no damage to them. All the content on the SD card is just fine, no issues at all. I didn't use the phone for several days afterwards, didn't charge it. It had shut itself off after a couple minutes after I got out of the pool. I took out SIM tray and laid it in front of my Dewalt cordless fan for a few days. I get no response now when I plug it into the wall charger, no response when I plug into my laptop (....strangely, my laptop running Win10 makes the "device connected" beeping sound when I plug the phone in but Explorer doesn't see the phone). I have unplugged the battery cable. It's just a dead phone now. Is ANYTHING from this salvageable? The upper right on phone internals look smoked. I don't know what those are.

Is there a way for me to diagnose the issue? I'm no electrician or small parts engineer. Is there a trusted company that can inspect/diagnose/repair? Would hate to just lose the entire value here. Everything worked perfectly with zero damage before the pool. Shouldn't the ROM still be good? Or the LCD screen? Is there parts value?