well
For you guys that are not 100% about your solder skill.
I would offer this idea.
Get a very small wire.
solder one end to the TXD pad/point in the picture
it is a much bigger point to solder to.
Then use the other end of the wire like a probe just make sure it makes good contact with the board.
(you may have to try 2 or 3 times)
What that will do is keep you from having to solder on a very small point.
have a look
I want to give a thanks to mrc for the picture and idea.