Author Topic: Flat Flex Cable repair in the field  (Read 5163 times)

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Offline sequenceTopic starter

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Flat Flex Cable repair in the field
« on: August 16, 2013, 12:00:42 pm »
Hi,

Could someone please point me toward a technique for repairing simple FFCs quickly? My general use case is the repair of 4-8 pin cables in laptops and cell phones, normally after someone else was less than gentle with them. I ran across this problem 5 times last month, and waiting for replacements is a serious pain. I've been using fine sandpaper to expose the traces, then applying conductive epoxy and kapton tape, but is there a product that maybe has pins that stab through both ends of a broken cable to connect them? I give full disclosure about the nature of these hacky fixes and try to replace them with proper FFCs, but a better repair solution would be highly appreciated.

Thanks!
« Last Edit: August 16, 2013, 12:03:57 pm by sequence »
 

Offline Psi

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Re: Flat Flex Cable repair in the field
« Reply #1 on: August 16, 2013, 12:05:14 pm »
but is there a product that maybe has pins that stab through both ends of a broken cable to connect them?

I did exactly that to fix an old Logitech computer keyboard.  Pushed a pin through the flex on each end, dab of hot glue and then soldered a wire between the pins.  Worked perfectly.

I dunno how easy it would be on a fine pitched flex though.
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Offline sequenceTopic starter

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Re: Flat Flex Cable repair in the field
« Reply #2 on: August 16, 2013, 12:29:23 pm »
Hot glue is the missing link, thanks! I'll get some pins and practice a bit, then.
 

Offline robrenz

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Re: Flat Flex Cable repair in the field
« Reply #3 on: August 16, 2013, 01:17:34 pm »
Check this post and the whole thread

Offline Psi

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Re: Flat Flex Cable repair in the field
« Reply #4 on: August 19, 2013, 09:14:09 am »
Just remember to check the metal pins your using are solderable.
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