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Weller Soldering iPhone Question

Hi guys I am a first time poster but a long time viewer. I just purchased a Weller WM120 because of the low watts(12 watt) and the pencil thin tip to work on iphones Well I am in the process of repairing the battery connector back onto the motherboard. I purchased a 60/40 rosin core soldering wire that is .06 inches thick so I assumed that would be small enough but come to find out when I hold the tip of the weller to the solder it will not do anything. The only way to get it to do something is if I place the wire on the side of the tip. Sooo should I purchase another soldering iron with a stronger wattage or did I get the wrong type of soldering wire. I am very new to soldering so I really could use any advise.

Thanks in advance guys!

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Alan, your soldering iron is a good iron and should most definitely work for you. It does sound like a bit of technique. First make sure that your tip is clean and that you use flux. In order to do any soldering you will find that you have to have solder on the tip first (tinning the tip), then it will melt the solder on the connector. I would strongly suggest that before you attempt this repair on a good board, use and old circuit board and practice until you are proficient at it. There are a couple of good videos here as well as here. Hope this helps, good luck.

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I saw you posted a question to my website, but I will answer you here.

There is no practical reason to attempt to solder with lead free solder. Use leaded solder when reworking modern electronics. Lead free solder only makes sense from an environmental perspective for industrial mass manufacturing. On the small scale of repair, leaded solder has many advantages and makes better stronger joints for hand soldering.

I microsolder every day and always replace lead-free solder with the more robust leaded solder in all my work.

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