New Moto Guzzi Door Mats Available Now
.. given how burned up the board is at the capacitor..
There are spray cans of conformal coating available. MG Chemicals (no connection) offers several kinds and has a guide to them on their Amazon product pages. I believe that the upper surface of the PCB doesn't have any exposed contacts (or air pressure sensors!) so you might spray some coating on that side through the gap that you are able to look through. You could also recheck the upper surface of your old board to make sure that everything looks OK for coating. I would still go with the paint-on type on the other side.
If I'm going to spend $400 bucks plus shipping there and back, it will be over $500 and at that price I'll just buy a new one for $700 bucks delivered. But I did send Carmo the photo's so will see what they say.
I removed the board from the white plastic mount and I'd guess that this board is toast. Plus I broke the metal bar that locks into the LCD which might be replaceable but given how burned up the board is at the capacitor?, I'm going to pass on trying to find someone to fix this part.