How to Properly Repair Key FOB Battery Clip - Chevy Cobalt Forum / Cobalt Reviews / Cobalt SS / Cobalt Parts
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post #1 of 6 (permalink) Old 11-02-2012, 02:10 PM Thread Starter
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How to Properly Repair Key FOB Battery Clip

If your key FOB stops working and you open it to change the battery and this is what you find....



First thing you need to do is clean as much of the old solder off of the three solder contact locations. One is a surface tab and the other 2 are through hole solder islands. Use wick, solderpult or heat and tap method. They all work in different degrees. Make sure holes are clean.



After it should look like this...



This is a good time to clean the battery contact since the clip is not in the way. This is the gold checkerd surface. I use pure ethyl alcohol.



Next you do the same for the clip, clean any old solder.



Dab some flux on all 3 locations to get better solder flow



Then position clip in proper resting place and solder all 3 points of contact starting with center surface tab.



You should end up with something like this...



Then you just need to clean the excess flux again with ethyl alcohol. Your circuit board is now ready to receive it's new battery.



Hope this helps somebody....

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Last edited by Coby7; 11-02-2012 at 04:06 PM.
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post #2 of 6 (permalink) Old 11-02-2012, 03:35 PM
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You sir, are the man! Will work on fixing both of move this weekend

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post #3 of 6 (permalink) Old 11-02-2012, 06:51 PM
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Elastic band and some tinfoil. Prob solved :P

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post #4 of 6 (permalink) Old 11-06-2012, 04:13 PM
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Soldered my key fob yesterday and it works! My soldering sucks but it works! Thanks again Coby


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post #5 of 6 (permalink) Old 11-06-2012, 05:56 PM Thread Starter
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Good. When it comes to soldering more is not better. You just need enough to cover the contact surface.

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post #6 of 6 (permalink) Old 11-06-2012, 09:07 PM
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And that it did, watched a couple videos and learned tinning and all that, fun it was tho

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