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Swapping a PSU instead of testing it first is a habit I wish more techs would quit
Shop I worked at in Fort Wayne in 2022 had a rule that any no-power machine got a new power supply before we even grabbed a multimeter, and I pushed back on it for weeks. Turns out about 40 percent of those units had fine power supplies and the real problem was a dead CMOS battery or a shorted front panel button, so customers were paying $60 for parts they didn't need. I started doing a simple paperclip test and a 24-pin voltage check before pulling any unit, and our return rate on those jobs went from 3 in 10 down to almost nothing over about 4 months. Drives me a little nuts when I see new guys jump straight to the parts cannon, because a $20 tester saves everyone a headache. How do you all screen a no-power machine before you start ordering parts?
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