Old guy at the flea market taught me a lesson about solder joints

Last Saturday I had this beat up vintage radio on my bench and one of the solder joints looked perfect but the circuit was dead. A retired electrician named Frank walked by my booth at the flea market and saw me scratching my head. He said "son, a shiny joint ain't always a good joint" and showed me how to check for a cold joint by tapping it with a plastic probe. Turns out it was cracked at the base but looked clean on top. I've been doing this for 7 years and never knew that trick. Has anyone else had a random stranger drop a game changing tip out of nowhere?

2 comments

2 Comments

terry_carter1513d ago

Honestly, is it really that deep though? A cracked solder joint is pretty basic stuff you should've caught in your first year, not seven. Tbh, tapping with a plastic probe is just a common troubleshooting step, not some ancient secret from a flea market wizard. Ngl, it sounds like you're making this old guy sound like Yoda when he just showed you a technique from the first chapter of any electronics repair book. Maybe you were overthinking the whole thing and missing the obvious because you were too focused on how it looked. Glue sniffers at the flea market give out tips too, doesn't make them game changers.

martin.felix13d ago

@terry_carter15 You're not wrong that it's basic stuff, but that's kind of the point. Most people don't soak up every tip from every book, we just get the ones from life bumping into us at the right time. It's funny how the simplest wisdom always comes from someone who's been around long enough to stop assuming everyone already knows it.