The conversation on this page has been archived and is no longer active.

MacBook Pro static discharge

Message #1 - Posted 2007/06/05 - Phillip Walters

I have a 17" C2D MacBook Pro, purchased in Dec 06, occasionally when it is powered up It seems to feel as if there is some sort of charge on the surface of the laptop. Running my hands over it to earth it seems to discharge it OK. I am not imagining this as my 3 year old just sat on my lap touched the machine and withdrew his hand quickly saying "Ow" in a loud voice. On this particular occasion the laptop had been sitting with the lid closed in sleep mode, on mains for about 45 minutes.Has anyone else experienced anything like this with another MacBook Pro ?

Phil

Message #2 - Posted 2007/06/05 - Jon B

Phillip Walters wrote:

I have a 17" C2D MacBook Pro, purchased in Dec 06, occasionally when it is powered up It seems to feel as if there is some sort of charge on the surface of the laptop. Running my hands over it to earth it seems to discharge it OK. I am not imagining this as my 3 year old just sat on my lap touched the machine and withdrew his hand quickly saying "Ow" in a loud voice. On this particular occasion the laptop had been sitting with the lid closed in sleep mode, on mains for about 45 minutes.Has anyone else experienced anything like this with another MacBook Pro ?

Do you use the small white plastic plug on the PSU, or the extension lead, the latter is earthed whereas the white plug isn't, so less likely to build up static on the latter.

Jon B
Above email address IS valid.
<http://www.bramley-computers.co.uk/> Apple Laptop Repairs.

Message #3 - Posted 2007/06/05 - Phillip Walters

Jon B wrote:

Phillip Walters wrote:

I have a 17" C2D MacBook Pro, purchased in Dec 06, occasionally when it is powered up It seems to feel as if there is some sort of charge on the surface of the laptop. Running my hands over it to earth it seems to discharge it OK. I am not imagining this as my 3 year old just sat on my lap touched the machine and withdrew his hand quickly saying "Ow" in a loud voice. On this particular occasion the laptop had been sitting with the lid closed in sleep mode, on mains for about 45 minutes.Has anyone else experienced anything like this with another MacBook Pro ?

Do you use the small white plastic plug on the PSU, or the extension lead, the latter is earthed whereas the white plug isn't, so less likely to build up static on the latter.

If you look at the PSU there are only two electrical connections (Live and Neutral) so neither the small plug or the extension would provide an earth as the PSU is double insulated. Thank's for the suggestion anyway.

Phil

Message #4 - Posted 2007/06/05 - Phillip Walters

Phillip Walters wrote:

Jon B wrote:

Phillip Walters wrote:

I have a 17" C2D MacBook Pro, purchased in Dec 06, occasionally when it is powered up It seems to feel as if there is some sort of charge on the surface of the laptop. Running my hands over it to earth it seems to discharge it OK. I am not imagining this as my 3 year old just sat on my lap touched the machine and withdrew his hand quickly saying "Ow" in a loud voice. On this particular occasion the laptop had been sitting with the lid closed in sleep mode, on mains for about 45 minutes.Has anyone else experienced anything like this with another MacBook Pro ?

Do you use the small white plastic plug on the PSU, or the extension lead, the latter is earthed whereas the white plug isn't, so less likely to build up static on the latter.

If you look at the PSU there are only two electrical connections (Live and Neutral) so neither the small plug or the extension would provide an earth as the PSU is double insulated. Thank's for the suggestion anyway.

Phil

I apologise, just had a better look at the extension in decent light and you are right it is earthed, will try it, thanks.

Phil

Message #5 - Posted 2007/06/05 - zoara

Phillip Walters wrote:

I have a 17" C2D MacBook Pro, purchased in Dec 06, occasionally when it is powered up It seems to feel as if there is some sort of charge on the surface of the laptop. Running my hands over it to earth it seems to discharge it OK. I am not imagining this as my 3 year old just sat on my lap touched the machine and withdrew his hand quickly saying "Ow" in a loud voice. On this particular occasion the laptop had been sitting with the lid closed in sleep mode, on mains for about 45 minutes.Has anyone else experienced anything like this with another MacBook Pro ?

Yes.

I always plug it in with the earthed extension cable (the one that squares off the power adapter) rather than the 'duck-head' mini-plug that attaches directly to the adapter. It's earthed; I don't get the shocks. Problem solved (but it becomes more hassle carrying the adapter around).

It's crap design, to be honest. Shocking.

-z-

"I'm sorry, that's not a hair-related question."

Need Help? Have a Question?

Looking for more help, comments, and answers?

Ask your questions on Ask Different. Ask Different is a community of Apple users ready to help.