Liquid damage so screen doesn't work but everything else seems to work

So, I spilled coffee all over my iPad. After drying it out I tested it and it actually restarted to the home screen but the touch screen part of the display didn't work. I was able to see that bluetooth and wifi worked and so it seemed the damage was centered on the display. After shutting it down and restarting over the next day or two the device began an endless loop of restarting. That's when I decided to disassemble it. Currently I have the display off the device and deciding on my next move. I'd like to repair it but has questions.

How best do I test the device aside from the display to determine they are sound?

Does the restarting behavior I described above make this issue more severe?

Is the corrosion taking its toll on this and no worth to repair?

I'd appreciate any thoughts. Thanks,

Took the device apart. Would be curious on your take on how bad or not so bad these look.

I'm planning on cleaning these up and giving them a go. Thanks.