Blowing on switches

[Haven_Alpha]

Ok, I see videos on people blowing on mechanical switches to fix them...
I tried it for my self and it really worked.

How does this work can someone explain??

[Radium_Angel]

1 minute ago, Haven_Alpha said:

blowing on mechanical switches

Kinky, have to add this to my next photoshoot. 

2 minutes ago, Haven_Alpha said:

How does this work can someone explain??

My guess is it removes the dust that was interfering with things.

 

[kelvinhall05]

14 minutes ago, Radium_Angel said:

My guess is it removes the dust that was interfering with things.

Agreed, likely blowing dust or something off the contacts, although in my experience if a board is dirty enough for dust to stop the contacts from making electrical contact, there are many other problems with the board...

[Crave]

Sometimes, adding a little 90-100% isopropyl alcohol inside works wonders too, but most of the time, if the switch is malfunctioning, it means that its time has come.

 

All switches have not only physical lifespan, but also electrical lifespan, and if it's the latter, there's no fix to that other than to replace the switch altogether.