this post was submitted on 15 Oct 2024
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Honestly, momentary switches are the simplest of all circuits. The only hard part will be soldering a new one into the old leads. What laptop is it? I can look and see what I think.
I did a quick look and it doesn't look like the switch is directly on the motherboard so most likely there's a JST plug or something similar with wire leads that then hook into the switch and/or a daughter board. If it's just two wires into a JST plug you can replace the switch with anything similar or if you wanna be ghetto about it just touch the two wires together to make a short.
You can probably get the exact switch if you look hard enough since almost everything but the exterior shell will be commodity components.
Good luck!
I ordered a keyboard replacement. This thing is a serious pain. The power switch is directly part of the keyboard. Under that button is nothing but silver paint for the contacts, which had firmed a crack over time.
The worst part? Above the keyboard is a thin piece of sheet metal. It is "riveted" on by melting a fee dozen plastic standoff that affixed the metal piece by melting the tips of them. I spent an hour carefully popping them off with a screwdriver. The replacement keyboard fits (good news!), but I have to carefully use a soldering iron to melt the tops of these pieces back into "rivets."
On the plus side, I have upgraded the RAM and added a hard drive. If it POSTs at the end of this, I will have 16gb of RAM and a 4 to add, which will let me ditch the external drive.
Yikes! That's just about the worst case scenario. It's maddening the shortcuts companies play to save literally pennies. Sounds like you've at least solved the problem so hopefully the replacement and all that work is fruitful!