Stubborn solder will never melt

Adam187a

Reputable
Jan 21, 2016
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Not sure if this is the right category to place it in, couldn't find an obvious one but would really appreciate an answer.

For years I've been trying to get into the electrical repair sides of things, I can easily repair modular hardware and can point out faults due to the symptoms. Whenever I come against a motherboard whether that be on a PC or a console, and I'd have to end up trying to resolder something, I can never get it off. Take this for example, I used several PS3's, Xbox's and PS4's as donor boards to practice removing components, regardless of how much flux I apply, what type of solder I add to assist the melting, or the amount of heat from a heat gun (Max 450°c) I can never ever get anything to easily slip off. It gets frustrating as a lot of people can do it, so clearly I'm making a noob's mistake? But even researching doesn't come up with proper answers other than 'Apply heat, more flux, blah blah.' At one point I needed the USB ports removed from a PS4 console, not even a local TV repair shop could remove it, he had used some expensive solder to basically apply and melt the solder on the USB's legs which ended up just leaving him baffled.

The station I use is a Hakko 998D, I've successfully used the heatgun in mobile glass repairs, and well that's about it really. It's more of a convenience then a proper repair tool. I'm clearly doing something wrong, it doesn't make sense to heat a chipset up for 10mins+ at over 380°c and still not have the solder/solder balls to melt at all. I end up bending the chipset or breaking it trying to pry it under high heat. Its come to a point where I'd have to accept defeat and conclude that soldering is just not compatible with me. What am I doing wrong?
 
From what I know, you need about 430-450'C on the PS4 boards to remove items.
back in the day, when I used to play about, the serious chip removing solutions were complicated and expensive, well I shouldn't say the removal was expensive, but putting them back in, with 200+ legs... was quite a speciality.