Apple 4400 power supply

Posted by: Anonymous

Apple 4400 power supply - 07/07/01 06:36 AM

Know where I can get a good power supply for a 4400 power pc? Also fits Motorola StarMax 3000 and 4000 series. Know of any problems with install? Unit is d.o.a. Replaced the battery, so this should be the next step, right?<br><br>
Posted by: Anonymous

Re: Apple 4400 power supply - 07/07/01 04:07 PM

When you turn on the computer, do any of the drives get power? or does it on turn on at all?<br><br><br>Oni<br><br>We got the Death Star, We got the Death Star.
Posted by: Anonymous

Re: Apple 4400 power supply - 07/10/01 08:26 AM

It is DOA. I've checked the power cables, ADB cables, all that stuff. Appreciate any help you can provide.<br><br>
Posted by: Anonymous

Re: Apple 4400 power supply - 07/13/01 04:36 PM

There could be one of two things could be happening here..... <br><br>Your motherboard could be dead or Your power-supply could be dead... With out have more information i will talk about both...<br><br> Read this how a power-supply works .. even when you computer is turned off there is a 5volt current going in to you computer...<br><br><br>1. Dead motherboard<br><br> Since turning on the computer for most mac's (PowerPc Mac's) is done by a. the keyboard b. a switch somewhere on the computer which is connected to the motherboard. Which in turn sends a 5volt current to the power supply telling it to turn on. So if the motherboard is malfunctioning/or dead that 5volt may be getting lost somewhere or not being sent at all. <br><br><br><br>2. Dead Power-supply<br><br> The power-supply is dead, the 5volt current is not getting to the motherboard, and when you push the power key on you keyboard, there is no power to sent back to the power-supply to turn it on...<br><br><br><br>Most Macintosh power-supply's don't have a on/off switch on them, to turn on the power-supply.. its hard to figure out if it is dead with have a second power supply to test. <br><br><br>So unless you can get a free/dirt cheap power supply for it, you might think about taking it in some place to get it looked at...<br><br><br>Oni<br><br><br><br>We got the Death Star, We got the Death Star.
Posted by: Anonymous

Re: Apple 4400 power supply - 07/16/01 12:32 PM

Thanks for the info, and the invaluable primer on power supplies. Found a new power supply on ebay for $25. Waiting for it to arrive. If that doesn't solve the problem, I'll take it to a Mac repair shop. At least I've done the obvious stuff.<br><br>