They are getting to complicated and electronic. Forget the circuit boards and go back to simple things I say. Anyway good website that has saved me a ton of money in repairs is:

Appliance Parts Pros.com Discount Appliance Parts – Since 1999

They have good videos if you want to tackle the repair or diagnose the problem. I've repaired my washer and dryer several times.

Between them and YouTube I found the information needed.