[G4] Power Supply Problem

[Valerie Maples]

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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