ps.: You can replace the 'Desoldering wire' with a piece of cable that has a multi-core twist or a coaxial cable shield that absorbs tin well.
Try this with a separate tin.
You can replace the small screwdriver with a wallpaper cutter, the point is not to cut the IC foot, just lift it off the panel so that it does not come into contact.
Then repair the power supply, if you are ok, you can solder the removed parts one by one.
Always measure in the meantime. Have a mA meter plugged into the wire on the input side (meaning 12V) on which you can see the current consumption. If the current consumption is high, you can interrupt the power supply immediately.
I note, for example, that I measure all measurable components (RLC) before installing.
When I¡¯m done with the installation, I check to see if there is a reverse part insertion.
The panel only gets energized when I have checked it over several times and there are calm conditions.
Important: always measure the input current consumption, the meter must be in it all the time so that you can interrupt the power supply in case of high current.
You also know that the circuits work with ¡®smoke¡¯, if the smoke comes out, it will no longer work. :-D
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Gyula HA3HZ
HA3HZ