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This is an actual repair video of the problematic 2000-2003 Volvo dash. This is not my first attempt, I have repaired over 100 units with the same technology. There can be other faults but according to my experience, this usually solves all the problems. You do need to have experience in soldering SMD components.
If your soldering looks nice and clean then it doesn't always mean it works but if it looks ugly it most likely won't work.
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