I picked up a used macbook about a month ago, works great except it occasionally it will get in a spell where it will shutdown suddenly, but it will do it sometimes right after I turn it on and other times after I've been using it the entire day, so it does not seem heat related, I've been monitoring the heat of the system and it doesn't seem abnormally hot and has happened right after turning it on.

One thing I have noticed during a particular spell it was having, if I pressed down on the left side around the power connector (e.g., lifting the it from that side), it would shut down immediately. Also this would happen if I lifted it up with hand underneath the back. It seemed like a shorting kind of thing to me, but the odd part is it is so hit and miss! And when it goes down, ALL power goes off completely.

Any thoughts? I heard of some shorting issues people have had when pressing on the top case and it bending to some extent and causing a short, any other ideas? What might be done to fix it?

Thanks,

Kenny.

[quote|kennyg]I picked up a used macbook about a month ago, works great except it occasionally it will get in a spell where it will shutdown suddenly, but it will do it sometimes right after I turn it on and other times after I've been using it the entire day, so it does not seem heat related, I've been monitoring the heat of the system and it doesn't seem abnormally hot and has happened right after turning it on. One thing I have noticed during a particular spell it was having, if I pressed down on the left side around the power connector (e.g., lifting the it from that side), it would shut down immediately. Also this would happen if I lifted it up with hand underneath the back. It seemed like a shorting kind of thing to me, but the odd part is it is so hit and miss! And when it goes down, ALL power goes off completely. Any thoughts? I heard of some shorting issues people have had when pressing on the top case and it bending to some extent and causing a short, any other ideas? What might be done to fix it? Thanks, Kenny.[/quote]