[G4] Power Supply Problem

[Joel Threatt]

Interesting, what other symptoms, if any,  did you have relating to the 
ram? I have been using the machine from the firewire drive since I 
realized it would work during testing? And what software would you 
recommend to diagnose the ram?

Joel
On Feb 7, 2005, at 1:45 AM, Valerie Maples wrote:

> I burned out 2 motherboards on a Quicksilver due to faulty RAM which 
> we did
> not figure out until after Apple swapped us for a new G5; shucks!  ;-)
>
> Check any non- Apple RAM; it has been known to be problematic.
>
>
> Valerie Maples
>
> Macintosh Dual 2 GHz Power PC G5
> 1 GB DDR SDRAM
> 160 GB HD
> System OS X 10.3.7
>
> On 2/6/05 12:36 PM, "Paul Frye" <paulfrye at mac.com> wrote:
>
>> Based on your analysis it points straight back to the motherboard.  
>> These
>> are typically very reliable machines.  I would suggest swapping out 
>> the
>> motherboard one more time.  Hopefully you got a warranty on it.
>>
>> Regards,
>>
>> Paul
>>
>> On 2/6/05 7:17 AM, "Joel Threatt" <jthreatt at nc.rr.com> wrote:
>>
>>> I have a Quick Silver '02  dual 1gig, currently at 867 due to a dead
>>> processor. I recently had some issues with the drives not spinning 
>>> up.
>>> My constant on/off/pram resets pretty much finished the logic board 
>>> as
>>> well. First I sent the PS to a Mac repairer for the "free" 
>>> diagnoses. I
>>> was told the PS was fine so then I sent in the logic board and after
>>> calling them they said the board was dead and it couldn't be 
>>> repaired.
>>> OK so of course they could replace the board so I did that. A few 
>>> days
>>> later I reassembled my QS and it booted and ran fine, much to my
>>> relief. After about 5-6 hrs the drives again spun down. Being careful
>>> only to do ONE pram reset I proceeded to change cables, change 
>>> drives,
>>> try one at a time. nothing worked. All those drives spun up fine in 
>>> my
>>> one firewire enclosure. A check of the voltages at the plugs showed
>>> 4.75v and 9.6v respectively. I tried this with drives connected and
>>> disconnected. Curiously enough my internal CDRW runs fine while my 
>>> hard
>>> drives will not spin at all when connected to the PS. Although they
>>> work fine in the Firewire. I own a lot of Macs starting with a Color
>>> Classic II and had no problems like this occur. This is my first G4 
>>> and
>>> all this trouble is driving me back towards a PC.   Oh I also checked
>>> the battery and it was at 1.2v so it got replaced first thing. Has 
>>> this
>>> happened to anyone else? I figure I am looking at a new PS. Or could
>>> the new board have failed like the original? Your thoughts will be
>>> greatly appreciated
>>>
>>> Joel
>>>
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>>
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