Something that was not quite clear to me - the new fan had only one cable.
One of the two cables of the old fan was only attached to the fan with tape and connected to the board, because it was probably a temperature sensor. This could be easily detached from the old fan and attached to the new fan with the same tape.
The display is now totally quiet again - like new! Thanks for the great instructions.
Lorsqu'il en aura reçu, il pourra afficher un graphique de sa réputation au fil du temps.
Voici un aperçu de ce à quoi ressemble ce graphique :
Aucun point de réputation obtenu pour l'instant.