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iPod touch solder won't melt

Using your excellent tutorial, I am on the verge of replacing the battery on my ipod touch.

The problem is the solder will not melt.

I have a Weller soldering iron with temperature control (60 Watt) so I am totally puzzled. It melts solder from my roll and I have tinned the tip.

Does Apple use different solder?

Is there some coating on it?

I appreciate your help.

Beantwoord! View the answer Dit probleem heb ik ook

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Wow...dont think I've heard of this problem before. Have you tried melting solder onto the old solder (IE pretending to solder the old battery on) to help increase the heat transfer? I have to do this with some of my larger soldering jobs, it may help you.

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Gekozen oplossing

Apple (and for that any other OEM) uses lead free solder. The melting point of lead free is somewhere around 380-400 degree centigrade. To make matters worse, multi layered boards like on the iPhone act just like a heat sink. You will need a beefy iron (60 watts is the absolute minimum) and a large enough soldering tip. And you have to work quick!

Slightly off topic but still good advice [|http://jimwarholic.com/2009/09/soldering...]|here].

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Completely agree with this one. It is very difficult to melt OEM solder without a good hot iron. To make it more difficult, if you are not quick about it, you'll melt or damage the board itself.

A solder suction device would be the best bet (used to find them everywhere, kinda like a rubber ear-wax remover....) to remove solder as you are melting it.

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Add solder to the pads to melt the solder and then remove with solder wick. I do this everyday. By adding solder to the existing pads helps to transfer heat and will help melt the solder.

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I used a 15$ 45 watt desoldering iron heats up to 734F or 390C. At first solder wasnt coming off because i didnt let it get hot enough, I also had to put a little pressure on it so it can melt.

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I change, as a hobbyist, iPhones connectors and it's always the negative connections points that won't melt. It seems that the chemistry inside the battery is the problem. When i clean all the points, the negative keeps always difficult to resoldering it with an professional Weller iron. For the moment i use a flux, used for copper pipes soldering, and 60/40 lead for soldering. I still keep looking for an solution, if someone nows, please let us now.

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murrcobo zal eeuwig dankbaar zijn.
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