Key Fob not working after resoldering
 

All,
My key fob did not work when I got the car. Put in a new battery and it started working. One day I noticed the light on the key was stuck on. Replaced the battery and it quit working. Sent my key to particlewave to resolder. He sent it back and it still will not unlock or open truck/frunk. I have noticed that sometimes if I open my door quickly it will beep once and the central locking will come on. I found a thread the other day that said something about it might be the door switch (I can't find it now, my search powers are failing me). I know there are dozens of threads about this, but has anyone found "the solution?" Any help appreciated.

Thanks,
Chris