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Mensagem original de: jayeff ,

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Hi @benjamen50 ,

It may speed up things but why take the risk? Can you be certain that the power has been disconnected?

Over 54 years ago when I started my apprenticeship, a phrase we learnt when working with electro-mechanical and electronic circuits was to "Power Off first, On last" i.e. disconnect power from the circuit as soon as possible and reconnect it as late as possible, when doing repairs unless you are testing for a problem, so that you don't accidentally make the problem bigger than it already is.

For me it has stood the test of time, as I still use it when doing any repairs that come my way nowadays

Just my $0.02

Also had a couple of questions on the forum in the last few months or so where they somehow managed to blow the backlight fuse during a screen replacement as they hadn't disconnected the battery. Replacing the fuse solved the problem. I don't think that the laptops had a power isolating switch though.

Coincidence maybe but makes you think

Cheers

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