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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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In Reply to: How to ID a bad solder joint posted by OceanRoar on October 8, 2003 at 06:28:53:
Can you see it? Did you do it? Okay, if you can see it, there are some telltale signs: a lumpy gray look to the solder is your first clue. This usually means the solder was overheated and did nto flow correctly. A good joint should be small and shiny.As far as electrical properties, a cold solder joint can pass marginal electricity, or sometimes none at all. These are even mroe difficult to find if they work after the components heat up and the joint comes loose.
Your best bet, if you're working inside a component, is to re-heat the joint. If the joint is lumpy, suck out the offending solder and re solder with fresh. If there isnt too much solder, lower your temperature and hold the iron on the joint for maybe five seconds. You'll see the solder reheat and reflow.
For tons more discussion on this, do a search on the Bottlehead forum. Lots there.
bhjazz
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Follow Ups
- Re: How to ID a bad solder joint - bhjazz 08:49:27 10/08/03 (3)
- But - Redwing 07:59:14 10/09/03 (1)
- I second that, suck out the old led, CLEAN PADS WITH DESIGNATED MARERIAL, re-solder with FRESH led. - gads 11:51:40 10/09/03 (0)
- Re: How to ID a bad solder joint - OceanRoar 09:41:03 10/08/03 (0)
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