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soldering dry joints

 
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builderbob



Joined: 22 Feb 2007
Posts: 1

PostPosted: Thu Feb 22, 2007 7:52 am    Post subject: soldering dry joints Reply with quote

Hello i found a couple of dry joints in my palsonic tv. when i tried to resolder the joint my new solder "sucked off" the existing solder leaving no solder around the tag at all. have you seen this before and how do i resolder the joint
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gary



Joined: 05 Apr 2005
Posts: 584
Location: MANCHESTER, uk

PostPosted: Thu Feb 22, 2007 11:54 am    Post subject: Reply with quote

CLEAN JOINT AREA WITH A FIBRE PEN, AVAILABLE FROM GOOD HOBBY ELECTRONIC SHOPS, APPLY LIQUID FLUX, PREFERABLY NOT A WATER BASED ONE, AND ALL SHOULD BE WELL
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Restoration
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PostPosted: Fri Feb 23, 2007 12:37 pm    Post subject: solder sucker soldering iron. Reply with quote

YES,
the lead and pcb are burnt, corroded by being a bad connection, solder just runs off it!
Clean the Metal, scrape clean with a knife if you have to! when the metal is clean it will solder.
Tip! in desperation, if all else fails, Aluminum solder, with special flux will solder where others fail.
Melvyn.
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minnie



Joined: 18 Aug 2005
Posts: 2877
Location: Hell

PostPosted: Sat Feb 24, 2007 6:40 pm    Post subject: Reply with quote

Follow the trace to the next component and put a jumper in.
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