On Oct 19, 2010, at 11:29 AM, James Morgan wrote:
> Since the issue of MDD G4 power supply problems has been discussed on
> this forum I wanted to report on my experience. I had power supply failures
> in both my dual 1.25 MHz MDD G4's. Symptoms were occasional failure to start
> progressing to more start failures and then to the computer quitting while it
> was running. Pushing the start button on the front resulted in a light that
> went out with no start.
I've had the above problem happen when the CPU needed to be re-seated
as well. Just because the MDD is doing this doesn't necessarily mean the it's
power supply related although I am glad that in your case it proved to be
true:-)
>
> After considering several options I decided to take the power supply
> out of both computers and send them to National Ram Electronics at Alpine New
> York for repair. They charge $89.00 for repair. Cost me about $14.00 to
> ship the 2 power supplys and they paid the return shipping. They have a one
> year replacement warranty. They also sell a reconditioned power supply for
> $149.00.
>
> I got a fast turnaround and both units are back in the G4's and working
> good as new.
>
> Used G4 power supply units go for about $100. on eBay and there is the
> risk that a used one is nearing it's failure date.
I've had several MDD's without power supply issues? so I can't confirm
"failure date"... what I can confirm is that dust bunnies over time can wreck
serious havoc giving shorter life to any power supply or for that matter, any
computer period.
>
> I installed an extra fan in both G4's because this computer was
> designed to move lots of air and, responding to complaints, Apple came out
> with a firmware update that slowed the fans down. I'd rather have a little
> extra noise than overheating.
Hmm, this is news to me? I was aware that they sent out new fans (power
supply & main fans), but not aware of the firmware update....hmm..
>
> Both the 400 watt and the 360 watt power supplies will work in any MDD
> G4. I have one of each, they are both 24 pin, and I don't see any difference
> in them.
>
> Here is the link to the National Ram Electronics repair website:
>
> http://www.natramelec.com/
Thanks for the above link! I may just need that when these guys get
harder to find:-) Jeff
>
> James Morgan
>
>
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