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Old 01-10-2010, 03:08 PM   #1 (permalink)
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Default Soldering won't stick

Okay, I'm not doing the soldering but my brother is... and according to him he says he knows how to solder and he also had his friend try it.

I have a BELKIN F5D7050 and the usb head on the device became lose and eventually snapped off of the board itself. I'm having my brother solder it but he says it won't stick... It keeps coming apart. Any ideas?
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Old 01-10-2010, 03:22 PM   #2 (permalink)
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Default Re: Soldering won't stick

Sounds like either poor quality solder (I don't like this ROHS stuff) or just not the best job although it could be that circumstances are making it more difficult (awkward to get at, for example). It's been a long time since I've had to do any soldering though...
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Old 01-10-2010, 03:41 PM   #3 (permalink)
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Default Re: Soldering won't stick

What kind of solder is it? Is it silver solder or rosin-core? Is he putting solder on the tip of the iron or gun, dabbing the spot, and then putting more solder on?
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Old 01-10-2010, 03:55 PM   #4 (permalink)
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Default Re: Soldering won't stick

rosin core solder and solder is going on tip of iron
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Old 01-10-2010, 04:20 PM   #5 (permalink)
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Default Re: Soldering won't stick

Try using silver solder. It has a higher melting point than rosin solder. The rosin solder might be cooling too fast for it to stick.
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Old 01-10-2010, 04:47 PM   #6 (permalink)
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Default Re: Soldering won't stick

Thanks! I'll definately having him try that out
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Old 01-11-2010, 09:27 AM   #7 (permalink)
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Default Re: Soldering won't stick

apply some rosin to the connections.. Try and heat the connections first and then apply the solder.. Just try not to heat them up too much to where it would loosen other components down the line..
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