Helo,
I am from Madrid, Spain. When I began to work like reparation-man, capacitor explosion where thunderous and smoky. Understanding how the circuit works allowed us to deduce which was the defective component to replace. If you changed the capacitor just because it had exploded, without thinking about why, you should carefully protect your face.
I long for those days when manufacturers were keen to spread in-depth knowledge of electronics.
This site reminds me of those times​