Progress Direct Systems Volt Tattler 2 Owner's Manual page 18

Solder one corner pin of the chip (or socket) to its pad. Check the alignment of the chip to see that all of
the other pins are still in place and that the chip is seated flat against the PC board. If there are pins out
of place or the chip has moved up on one end, briefly heat the one soldered pin while guiding the chip
back onto the board. Remove the heat immediately once the chip is properly seated. Allow the joint to
cool.
If all of the pins are viewed as through the board as in the above image carefully solder the remaining
pins avoiding solder bridges between the pins and adjacent traces.
Remove the cellophane tape and inspect the work just completed. Give the board a final once over
looking for potential problems, improper microcontroller installation (Pin 1 end of the chip), solder
shorts, unsoldered or badly soldered connections etc.