How can i tell if my trannies are fried?

[add4]

So i just made a still born board and i'm suspicious about the trannies, i think i might have overheated them.
is there a way to test that? if possible without unsoldering them
thanks in advance

[Fender3D]

Do they smell like spring rolls?

 

with your DMM (not Deluxe Memory Man  ) check for shorts, otherwise turn your board on and tell us what it does (schematic please)