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
Phillip Walters pjwalters@redacted.invalid 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 black.hole@redacted.invalid wrote:
Phillip Walters pjwalters@redacted.invalid 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
Phillip Walters pjwalters@redacted.invalid wrote:
Jon B black.hole@redacted.invalid wrote:
Phillip Walters pjwalters@redacted.invalid 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
Phillip Walters pjwalters@redacted.invalid 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-