"If the fan is very old and no longer works properly, it just needs to be replaced. " Sometimes it is really complicated replacing them with a danger of damagi

"If the fan is very old and no longer works properly, it just needs to be replaced. " Sometimes it is really complicated replacing them with a danger of damaging stuff, if you have no routine. Then using something to spray is easier to fix it for some time. It helped in my cases, even though I will definitely try something else next time ..