Just remembered, it has an external power adapter, not an internal supply. There is something called a DC to DC board though. It's about $100 and probably takes about a half hour to put in. It's a tough call without having the unit to look at. One would need to get inside and look at certain LED's and take some voltage readings. Could even be the video card overheating but that would be probably a lockup rather than a shutdown. The shutdown could also be the CPU or logic board overheating, going bad or bad airflow and/or dirty innards<br><br>Probably worth resetting the PMU first, Power Management Unit. It does require a slight take apart though.<br><br>http://docs.info.apple.com/article.html?artnum=86760<br><br>------>#1 - JD's Trivia game<br><br>------>#2 - MM-MCF Trivia game

<blockquote><font size=1>In reply to:</font><hr><p>Liz is in the same position. She's not about to be opening up the Cube and doing anything other than a battery replacement.<p><hr></blockquote><p>Yeah, I figured that. Just offering suggestions so she can judge if she wants to put the money into it. <br><br>------>#1 - JD's Trivia game<br><br>------>#2 - MM-MCF Trivia game

thanks to everyone that is trying to help but to be honest with you I really dont know much about computers at all. That is why stan gave me the cube because He was going to get around to teaching me..But we never did.( to busy visiting i guess).Well he did show me a little just the basics ..like checking email ,his site..( just a little side note...Since he was Ill when I came home from work I was to check his site and if there were no postings I was to come down to his house right away if i didnot get a phone call from him saying the internet was down or something) .....I do recall now ..stan saying something about the little mac shop....it was around the corner from his house...small little store front ..Since I didnt know much about computers this is nothing on it that i really need to save at all....And you are right I dont think i would be able to change the battery myself I looked at the diogram and the machine its self...I have NO i dea ...and I would be afraid I would reck the machine alltogether.......I dont know if I will ever be able to purchace a mac on my own .but I will say this I really liked the grafics that were on it..how fast it was..I liked that i could just trun it on and have no trouble that i see there is with using this computer that jocelyn bought with her babysitting money..I can now see why people have a great apperication for the Mac.. thanks again for everyones help..and welcomming me int to your community..<br>liz<br><br>

Liz,<br><br>Replacing the battery is quite simple. If you can e-mail me, I'll make sure you get a proper take apart manual.<br><br>mississauga AT mac DOT com<br><br>- alec -

As I recall, the Cube doesn't have a fan. The design was so that it pulled cool air in from the bottom and expelled the warmed (heated) air out the top - like a chimney.<br><br>

Don't worry about wrecking the computer. Unless you're beating on the internal parts with a hammer, or pouring acid on it it should be okay. ;)<br><br>The manual we linked to shows you exacly how to pull the computer apart too. Once you do it, you'll wonder why you ever thought you couldn't.<br><br><br>Hey I'm an F'n Jerk!®

It can't be any worse than prying open a Mini to change the hard drive. <br><br>

That makes me wonder if her machine couldn't just be clogged with dust? It's an old machine and who knows what has gone in there and whether it's ever been cleaned out. It does appear to be some kind of over heating problem causing the shut down.<br><br>

yes ...i think the machine is getting hot....I dont remember it ever getting this hot before..<br><br>

One thing you should definitely do is take the machine outside and blow it out with compressed air.<br><br><br>Hey I'm an F'n Jerk!®