Author Topic: Repairing damaged PCB pad?  (Read 2027 times)

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Offline sdaf2

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  • Posts: 17
Repairing damaged PCB pad?
« on: Sat, 18 January 2020, 11:48:08 »
I put my Noppoo Choc Mini through 5 years of abuse, it was extremely dirty and the switches felt very rough so I decided to just take it completely apart, remove the switches and replace them. About a third the switches had bent pins making them a pain to remove, and this one in particular pulled up the pad. It's not completely detached but obviously not in good shape.. How would I fix something like this? Could I get away with laying it flat (third pic) and just soldering over it like I normally would?
https://imgur.com/a/MvuMIgy

fwiw I've only ever soldered once before so I was basically just using this board to practice with since I'm not very attached to it.
« Last Edit: Sat, 18 January 2020, 11:49:39 by sdaf2 »

Offline Tactile

  • Posts: 1434
  • Location: Portland, OR
Re: Repairing damaged PCB pad?
« Reply #1 on: Sat, 18 January 2020, 13:58:39 »
Have a look at this. In your case one end of the wire would be soldered directly to the switch leg.

https://forum.digikey.com/t/circuit-board-trace-repair/
REΛLFORCE

Offline nevin

  • Posts: 1646
  • Location: US
Re: Repairing damaged PCB pad?
« Reply #2 on: Sat, 18 January 2020, 14:03:29 »
any places that you have lifted traces, follow the trace and add a jumper between pads. this will ensure connection if the trace is broken.

see the yellow line below
233879-0
Keeb.io Viterbi, Apple m0110, Apple m0120, Apple m0110a, Apple 658-4081, Apple M1242, Apple AEK II, MK96, GH60/Pure, Cherry g84-4100, Adesso AKP-220B, Magicforce 68

Offline sdaf2

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Re: Repairing damaged PCB pad?
« Reply #3 on: Sat, 18 January 2020, 18:08:33 »
Thanks for the help guys

Do you know if there a specific gauge/material wire I need to use for repairs like this? Would a regular bare copper wire do the job?

Offline nevin

  • Posts: 1646
  • Location: US
Re: Repairing damaged PCB pad?
« Reply #4 on: Sat, 18 January 2020, 21:37:40 »
no, no specific gauge wire, anything you have on hand would work. better to use a regular wire with insulation than a bare wire, that way you don't accidentally get a short.

- cut wire to length
- remove little bit of insulation from the ends
- tin the ends of the wire with solder
- put wire in place and solder to desired pins/pads

you could pull apart an old usb cable or network cable if you don't have wire laying around. (probably be 24-30ga which would be fine)
Keeb.io Viterbi, Apple m0110, Apple m0120, Apple m0110a, Apple 658-4081, Apple M1242, Apple AEK II, MK96, GH60/Pure, Cherry g84-4100, Adesso AKP-220B, Magicforce 68

Offline sdaf2

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  • Posts: 17
Re: Repairing damaged PCB pad?
« Reply #5 on: Sun, 19 January 2020, 02:41:12 »
Sounds good, thanks for the info

Once I get my new switches I'll try fixing it up