Originally Posted by stonecutter
I think the moisture can get into contact with the gyro chip with exposed pins. The gyro is a chip on the belly side, as pointed out by another member (sorry forgot who). So my theory is that wet grass can get the chip wet and possibly cause a temporary short.
I had funky gyro issues when I first got my v929 and flew during early mornings, then I put a plastic bag over the rx and that issue hadn't re-appeared.
I read somewhere if you spray varnish on the board it will seal it from water. Being that varnish has been used for years for copper motor windings I believe it will have no effects whats so ever on the board. However, I have not tried it yet so I could be wrong. There are those who have used it somewhere on this forum though.
Note: WAS WARNED TO NOT USE WATER BASE VARNISH.