Technically you could hack the not grounded 3 prong UK (Type G) adapter (that I mentioned before) to connect the ground prong to the grounding pin as shown in this tutorial. The metal is more visible in the magnified picture on the right. The left picture from this answer shows the difference. So at Apple, the rule of thumb is that if it is an extension cord, then the socket is connected to the ground pin so it is probably grounded, if it is the small adapter, then there is no connection in the socket so no grounding for you:
You have to carry that extra 1.8 meter of cable tho. This is a 3 prong UK plug that has a grounding prong, but they haven't connected it! Fortunately at the extension cord there is a connection. Obviously a 2 pin/prong plug is not grounded, you'll need one with 3 of them, but even in this case you have to check if the adapter's socket/shoe has metal in it (AKA is connected to the ground), because you can't take that granted at Apple! Just check out this picture from this article: The charger can be grounded because the metal pin that holds the adapter is (subtly) also the ground: I have on occasion intentionally grounded one of the plastic feet with foil when I am waiting for the electrician to fix an outlet or I am working in a location where I can't get a proper ground. This sort of ground current drives me nuts (even though it's normally totally safe).
You'll have to check with an electrician or take your mac to another outlet that is known to be properly grounded if you are already grounding it through the wall if you still feel the tingle with a grounded cord. You shouldn't be able to feel any tingle due to you being better grounded than the mac if your outlet is properly grounded. The adapter article from Apple has some good tips and a nice picture. (Or unearthed to some) Use a three conductor plug to ground the device and check your MagSafe pins to be sure they extend fully and mate correctly with the Mac. In the US, standard power means the "duck head" two prong connector is ungrounded. 2 years no problems.Īnd I know it sounds like a lot of issues but I just cant help but try anything to bring it back to life.Your specific mac only grounds itself through the magsafe connector if you are using a grounded plug. All upgrades were installed by me but like I said. I’m in no way an expert but I am very hands on and have been a mac user for 15 years. Cable stopped working but my 2nd charger cable worked fine. It has crashed maybe once or twice since then but did seem better.Ī surge with my power cable (There was a time recently when all this started that I remember by power cable being very hot and my computer in turn before all this started happening. Took it out again and was able to boot it up while connected via USB 3.0. To my surprise everything was still on it! I ran disk utility from another machine and everything came up fine. I thought this was it so I took out the SSD and tried to see if I can salvage anything on it. It started to not be able to see the start up disk, which is located on my SSD, at all. But once again very random and often just starts working again.Īs of last week it has been much worse. Crash report attached.įrom time to time It will crash and let out 3 beeps which i believe means that it cant detect the RAM. There is no clear pattern and seems to happen quite randomly. It will just crash and put up the Grey restart screen. The other way it has started to crash is when I have Chrome open. At this point I try to avoid i sitting on my lap and only put it on a rigid surface. It often comes back up with no issues but if i put too much pressure on that side or sometimes the bottom. This crash often makes several lines on the screen and just freezes until I perform a hard power down. The first way is when I put any pressure on the left side where all the ports are.
I have noticed it crashing in different ways. It was like a new computer and has worked great for the better part of 2 years.īut recently it keeps crashing.
I installed a SSD 2ish years ago (Crucial) I took out my Superdrive and replaced it with a HD caddy and my original 750gb HDD, 2ish years ago.Īnd after those upgrade boy did my Mac fly.
I upgraded the RAM 3 years ago to max out at 16 GB (Crucial) First of all let me preface this post by telling you what I have upgraded in my machine.