Whoo-WEE, things sure have changed in the 20 short years I’ve been doing appliance repair! The appliances themselves have changed from discrete mechanically-controlled machines to computers that do appliance functions. But the level of skill among technicians has changed, too. Somewhere along the way, essential skills like a working knowledge of basic electric circuits and using schematics to develop troubleshooting strategies have gotten scarce. In other words, there’s a critical shortage of Circuit Fu among appliance techs today.
The appliance repair trade is probably worse off than most of the other skilled trades because the apprenticeship programs are practically non-existent, there are not many cost-effective training venues left today, and appliances have become increasingly more complex and computer-controlled. So you’re left with a double-whammy: the technical skills have gone down at precisely the time they’re needed the most as appliances have gotten more complex to troubleshoot.