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Electrical issues with Mac

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MargaretM
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Electrical issues with Mac

Postby MargaretM » Sun, 08 May 2011 9:30 pm

We have an american Mac desktop that was running fine when it was plugged directly into the wall outlets using adapters (the computer was plugged in and the speaker system was plugged in).
We have just moved the whole thing to a new area where the computer and speakers are each plugged into a surge protector (again with adapters) - and while the computer turns on fine and works, now both the computer and speakers are emitting electricity/ shocking us when we touch them on some of the metal surfaces. This obviously feels totally unsafe and I'm also worried the whole computer could fry.
Does anyone know what might be causing this or how to fix it?
I'm wondering if it's a surge protector issue because we did not have these shock issues when it was plugged directly into the wall with adapters. This is a new- ish surge protector that we have used before with our whole tv setup (including our Mac wireless router) and it gave us no problems.

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Postby ukdesigner » Mon, 09 May 2011 1:48 pm

I am guessing, and this is just a guess but you might not an earth wire in your plug as you're on the 2-plug system. I think that might be your problem. I'd go down to the apple store and get and 3-pin plug as that is what I reckon might be causing the problem.

However, it might just be that you've got very old wiring that's just naff.

That's only a guess though. Apple's power supply units are pretty good and in all the years I've owned macs, and I've had ALOT, I've never come across this personally, but then again mine have always had the 3-pin plug which is earthed.
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Postby soccerist » Sun, 06 Nov 2011 9:56 am

A 110v on a 240v outlet inadvertently draws the transformer heat...u can use ur older ipod or ipad charger's duck head on the transformer....$38...out of danger,rather than risk spoiling the transformer...

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Postby durain » Sun, 06 Nov 2011 9:56 pm

i take the mac PSU is auto voltage, therefore you are not using the step-down (or step-up depending which way you describing it) transfomer?

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Postby soccerist » Wed, 09 Nov 2011 1:51 am

the easiest way to save that..is to borrow one UK plughead or u could order them thru the ASP(Authorized Service Provider)...Spore is one of the markets which offers both US and UK plugs in most of the retail boxes...

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Postby bluenose » Wed, 09 Nov 2011 5:41 pm

A 110v on a 240v outlet inadvertently draws the transformer heat


The statement above is nonsense...if you use any normal 110 device on a 240 outlet it will draw 2 x current (approx) so will obviously get hot and may burn out if not designed for dual voltage.....it does not do it inadvertently, but most Laptops are dual voltage and are designed with the higher current taken into consideration.....

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Postby sundaymorningstaple » Wed, 09 Nov 2011 5:54 pm

soccerist wrote:the easiest way to save that..is to borrow one UK plughead or u could order them thru the ASP(Authorized Service Provider)...Singapore is one of the markets which offers both US and UK plugs in most of the retail boxes...


This is also BS. Most do NOT offer US plugs. UK & Singapore share the same plug configuration, the US does not and I'm yet to find flat pin || plugs supplied with electrical/electronic equipment here in Singapore and I've been here 30 years. Maybe you are confused and think two round pin plugs are US plugs? They're not.

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Postby Strong Eagle » Wed, 09 Nov 2011 7:06 pm

sundaymorningstaple wrote:
soccerist wrote:the easiest way to save that..is to borrow one UK plughead or u could order them thru the ASP(Authorized Service Provider)...Singapore is one of the markets which offers both US and UK plugs in most of the retail boxes...


This is also BS. Most do NOT offer US plugs. UK & Singapore share the same plug configuration, the US does not and I'm yet to find flat pin || plugs supplied with electrical/electronic equipment here in Singapore and I've been here 30 years. Maybe you are confused and think two round pin plugs are US plugs? They're not.


The charger for my Lumix camera came with dual plugs. Only one, though.

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Postby soccerist » Tue, 15 Nov 2011 9:26 am

i know...im talking about the retail boxes for the macs sold in singapore.im sure the ts has a friend who may have the duckhead to try out,something thats free to try...i have seen people who brought their macs with the us plug and used it on the sing outlets,and it gets more heated up,drawing the 2x more current..thats why they grumbled.but nowadays...even the apple usb power adapter is shipped in the uk mould too...not bull-shitting,then whats the use of being in the company.

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Postby soccerist » Tue, 15 Nov 2011 9:32 am

inadvertently,margaret did'nt mention maybe its a cool and dry operating environment....where static build-up is great...its the same like in the cold storage supermarket,where the dry air built-up contributed to getting shocks from the trolleys..another classic example is the build-up of water vapor patch on the mac desktop...takes a while after use for the patch to disappear..

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Postby Strong Eagle » Tue, 15 Nov 2011 10:10 am

soccerist wrote:i know...im talking about the retail boxes for the macs sold in singapore.im sure the ts has a friend who may have the duckhead to try out,something thats free to try...i have seen people who brought their macs with the us plug and used it on the sing outlets,and it gets more heated up,drawing the 2x more current..thats why they grumbled.but nowadays...even the apple usb power adapter is shipped in the uk mould too...not bull-shitting,then whats the use of being in the company.


What nonsense is this?

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Postby nakatago » Tue, 15 Nov 2011 11:08 am

I wanted to refute it (once I decipher it) but I realized it would be futile. :-|

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Postby sundaymorningstaple » Tue, 15 Nov 2011 12:54 pm

Unfortunately 90% of soccerist's posts are undecipherable. :roll:


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