# Can't solder the new switch anymore. Solder doesn't stick to it

**URL:** <https://community.keyboard.io/t/cant-solder-the-new-switch-anymore-solder-doesnt-stick-to-it/4382>\
**Category:** Hardware hacking\
**Created:** [November 21, 2020, 10:53am UTC](https://community.keyboard.io/t/cant-solder-the-new-switch-anymore-solder-doesnt-stick-to-it/4382 "2020-11-21T10:53:26Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Titan-C](https://yyz1.discourse-cdn.com/flex031/user_avatar/community.keyboard.io/titan-c/32/983_2.png) [@Titan-C](https://community.keyboard.io/u/Titan-C)\
**Post date:** [November 21, 2020, 10:53am UTC](https://community.keyboard.io/t/cant-solder-the-new-switch-anymore-solder-doesnt-stick-to-it/4382/1 "2020-11-21T10:53:26Z")

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This is the 3rd switch that fails over the last year. Yet I had a really hard time desoldering it. I even fear I had broken part of the circuit.

 ![IMG_20201121_114607](https://canada1.discourse-cdn.com/flex031/uploads/keyboard/original/2X/f/f4a23205808b3cb364bf22ef607b573066ee97d9.jpeg)  
During desoldering A had a lot of solder left, I had to move the switch wire back and forth so it broke apart from the remaining solder and then once free melted the remaining solder from the other side. Also during desoldering out of B a very tiny “copper” sheet came out, I’m not really sure, is that part of the internal wire?

When placing the new switch, I could solder as usual one of the contacts©. However, the one I had troubles desoldering on the first place A&B doesn’t work anymore. The solder doesn’t melt on the switch wire. It only melts on my soldering iron. I don’t understand what is going on. I heat up the switch wire yet I can’t get the solder to melt on it.

I have almost no experience soldering, I just soldered/replaced 2 switches before. They worked out fine.  
Thank you in advance for enlightening me.

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**Author:** ![jesse](https://yyz1.discourse-cdn.com/flex031/user_avatar/community.keyboard.io/jesse/32/361_2.png) [@jesse](https://community.keyboard.io/u/jesse)\
**Post date:** [December 1, 2020, 1:20am UTC](https://community.keyboard.io/t/cant-solder-the-new-switch-anymore-solder-doesnt-stick-to-it/4382/2 "2020-12-01T01:20:55Z")

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Yeah, you ripped out the through-hole. Assuming C still has connectivity to the D pad next to it, you need to run a bridge wire to the two switches on either side:

 ![image](https://canada1.discourse-cdn.com/flex031/uploads/keyboard/original/2X/7/74c82749ad1a11bceda45257867da66d2cc78b7e.jpeg)

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**Author:** ![Titan-C](https://yyz1.discourse-cdn.com/flex031/user_avatar/community.keyboard.io/titan-c/32/983_2.png) [@Titan-C](https://community.keyboard.io/u/Titan-C)\
**Post date:** [December 1, 2020, 5:32pm UTC](https://community.keyboard.io/t/cant-solder-the-new-switch-anymore-solder-doesnt-stick-to-it/4382/3 "2020-12-01T17:32:12Z")

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Thank you. That was enough of a solution, my keyboard is working again.

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**Author:** ![Xerus](https://yyz1.discourse-cdn.com/flex031/user_avatar/community.keyboard.io/xerus/32/2902_2.png) [@Xerus](https://community.keyboard.io/u/Xerus)\
**Post date:** [June 1, 2022, 12:47pm UTC](https://community.keyboard.io/t/cant-solder-the-new-switch-anymore-solder-doesnt-stick-to-it/4382/4 "2022-06-01T12:47:20Z")

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Hey, I might have a similar issue in [Fixing my soldering mistake - #8 by Xerus](https://community.keyboard.io/t/fixing-my-soldering-mistake/4278/8)

Will this bridging make all the keys work? Can I bridge it simply with soldering tin?