How do you find out which component on a circuit board is malfunctioning? My fridge stopped to work. I would like to repair a circuit...

My fridge stopped to work. I would like to repair a circuit board that belongs to my fridge...I'm sure thats the broken piece. I'm an amateur and I mess near circuit boards and components (capacitators, diods...). How do you test a circuit board and find out which component is defective? Is near a website that teaches that?
Shower hot sea gone down!?
Answers:    Using proper trouble shooting technique. You will need a voltmeter and a repair booklet for that particular circuit board. Most technicians very soon days just replace the boards.
Which of the two would you prefer? Craftsman...
nope, most professionals lately replace the boards