Can I swap a working motherboard from a water damaged S9+

Thanks for that. The motherboard looks ok. Water ingress has affected the touch screen.

Managed to switch phone on and enter 4 digit pin code with difficulty.

There appears to be a red/pink line up the left side of screen and a faint wide band across bottom of screen.

The home screen came up but the touch screen not working made it impossible to select any apps.

Would connecting the phone to a pc and saving all the stored data be another option?

*****UPDATE*****

I have purchased a fully working Samsung Galaxy S9 and will be swapping the motherboard from the old phone to new phone.

What I need to know now is on the new phone do i need to go through setting up the phone prior to motherboard swap or do I swap before doing phone setup or does it not make any difference either way?

Thanks

Thanks for the advice. the motherboard swap worked.

So a Galaxy S9 motherboard survived a full wash cycle in a washing machine just damage to touch screen only.

Purchased a mint condition S9 off ebay for £134 and having cleaned the original motherboard from water damaged S9 with 99.9% Isopropyl alcohol and swapped it over to new replacement phone and powered up the phone everything works!!!

Thanks for all the advice.

I am happy to listen this and thanks to you for supporting right to repair.