Rant: Hot air vs infrared rework stations, spent $300 to find out

I tried fixing a GPU with a cheap hot air station from Amazon and kept burning pads off the board. Switched to an infrared preheater I borrowed from a buddy in Houston, and my first BGA reflow worked perfect. Hot air is fine for small stuff like caps or connectors, but for big chips like a 2080 super, infrared just heats the whole board evenly. Anyone else find one method way better for specific jobs or am I just bad with hot air?

2 comments

2 Comments

black.patricia17d ago

Hot air seems fine to me if you know what you're doing. I've done plenty of GPU repairs with just a decent hot air station, never had pads coming off unless I was being way too aggressive with the heat or holding it in one spot too long. Infrared sounds nice for big boards but dropping $300 on a whole new setup when you can learn to control your hot air better feels like overkill. You probably just needed more practice with your technique, not a whole different tool.

craig.nathan17d ago

Black.patricia said "you probably just needed more practice with your technique, not a whole different tool" and that's exactly the kind of thinking I see everywhere. People get defensive about their method because they had to grind through the learning curve, so anyone struggling must just need more practice. But here's the thing I notice in a lot of areas of life, not just soldering. Sometimes buying the right tool for the job isn't about being lazy, it's about working smarter. You can brute force a lot of stuff with hot air and good technique, but infrared removes a whole variable that takes months to master. It's like saying you should learn to drive a stick shift better instead of buying an automatic, when sometimes you just want to get from point A to point B without stalling.