Re: Does this = board trashed?
ykochcal
Was the wire coming up from the bottom of the picture?
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I usually add a bit of fresh real (60/40) solder before unsoldering, on older boards it cleans off the old joint, allows better/quicker/more even heat transfer for quicker work. The heat transfer is through the molten solder over the whole pad and wire, large cross section when fully wetted, not just the small tip area that has to be forced on the pad with a dry connection. It also allows the tip to be spun around the wire and hole without friction on the pad during the suck to get a gap all they way around the wire. Also I find the tip on the unsoldering tools do not stay well wetted/tinned. The soldering iron I always add a bit to tin and clean the tip before use, same for the unsoldering. (if the board has value) As I look at the pictures I may be able to see the force of the tip are on the other pads, that may be doing the pulling that removes them. John
-----Original Message-----
From: TekScopes@groups.io [mailto:TekScopes@groups.io] On Behalf Of lop pol via Groups.Io Sent: Sunday, February 18, 2018 4:14 PM To: TekScopes@groups.io Subject: Re: [TekScopes] Does this = board trashed? Seems like I'm trying really hard to mess this all up. My hakko 808 sucked off one solder pad (first time that has happened using it) And I slid off 2 more. Now what? Can I solder to the back of the board? https://ibb.co/cdEUY7 https://ibb.co/m9JOt7
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