soddering pics

look you only sodder on the circle area in the picture if you have D21 to find if you have D21 you look at the metal plate that sticks out (the resistor)in the middle of the board look strait of that you should see a line with red around it to the left of it there should be D21 or D1. if you have D21 follow th pictures no matter what number you still sodder the middle of the three pronges in the other picture I hope this helps