"alex goldman" ha scritto nel messaggio
...
petrus bitbyter wrote:

In the days that PCBs were expensive, so you could take an hour or more
to
pinpoint the fault, our techs used an hair dryer and a can of coolant.

I don't think I understand: what did they use a hair dryer for? If it were
hot enough for melting solder, its manufacturer would probably get in
trouble with the intended customers.

An hairdryer usually didn't have go too high, for melting solder there's
needed 300°, if an hayrdryer can go to 300°, probably we didn't have hair
anymore ;-)

I.