Desoldering a capacitor without frying the motherboard.

Solved
ThePixel Posted messages 236 Status Membre -  
Jojolaguitare Posted messages 12012 Registration date   Status Membre Last intervention   -
Hello, is there a technique to unsolder a capacitor without frying the motherboard? Because I've already tried to replace a capacitor but it's impossible; every time I do, I fry the motherboard...

Thanks in advance for your answers.

1 réponse

kardegil Posted messages 2070 Registration date   Status Membre Last intervention   307
 
Hello,

Impossible, you don’t damage the motherboard by desoldering a capacitor. I've done it time and time again, and I've never had a problem.
You desolder a capacitor because it's bulging or possibly to check it.
With a proper soldering iron, a solder sucker or braid, and some attention, it can be done.

--
---
Please make sure to describe your problem well.
5
epango Posted messages 37194 Registration date   Status Membre Last intervention   4 270
 
You are too categorical. It is possible as long as you have the necessary know-how and the essential equipment.
0
kardegil Posted messages 2070 Registration date   Status Membre Last intervention   307 > epango Posted messages 37194 Registration date   Status Membre Last intervention  
 
Hi epango,
It's true, I’ll give you that.
0
ThePixel Posted messages 236 Status Membre 12
 
In fact, each time I desolder a capacitor, the solder burns the motherboard due to the heat.
0
Jojolaguitare Posted messages 12012 Registration date   Status Membre Last intervention   2 781 > ThePixel Posted messages 236 Status Membre
 
Hello.

You shouldn't spend a quarter of an hour on soldering either! When the soldering iron reaches its temperature (280°C for a 30-watt iron), the solder joint is made in 2-3 seconds. But before desoldering anything, you need to completely discharge the current flowing on the motherboard because capacitors are more or less like batteries.
Now I strongly agree with epango >>> It's possible provided you have the necessary know-how <<< Changing a capacitor is fine, but isn't the fault upstream? Moreover, without an oscilloscope to help you, you will really struggle to find a fault.

This is just my opinion... Bye
0