[G4] Power Supply Problem

[Joel Threatt]

An interesting thing just happened. I read Valeries noted about the ram 
so I shut down the computer to check if the ram was seated. I removed 
the two 256 DIMMS plugged in a hard  drive to see if by some quirk of 
fate it would spin up. Well no such luck so I shut down again, removed 
the drive, replaced the two 256s and went to start up. After the little 
spinner on the grey screen came up, a dark background descended then a 
picture of the power button popped up with a message in a half 
languages that said I need to reboot my system and told me either to 
hold the power button for several seconds of hit the reset button. Well 
I hit reset and it did the same thing. So I shut down, again, removed 
the two 256s and it restarted fine. Has anyone seen this before?  Weird 
stuff going on in my computer.

Joel
On Feb 7, 2005, at 9:53 AM, Valerie Maples wrote:

> The person I sent ti to took care of the replacement.  Sorry I no 
> longer
> have the info as the computer has been replaced.  I think it might 
> have been
> a Lifetime Memory chip, 512  DIMM, I think 133 speed.
>
> Sorry I don't remember more...
> Valerie
>
>
>
> On 2/7/05 8:37 AM, "Jerry Seay" <jjseay at hal-pc.org> wrote:
>
>> Please list the brand and types of memory that caused your problem.
>>
>> Thanks,
>>
>> Jerry S.
>>
>> -----Original Message-----
>> From: g4-bounces at listserver.themacintoshguy.com
>> [mailto:g4-bounces at listserver.themacintoshguy.com]On Behalf Of Valerie
>> Maples
>> Sent: Monday, February 07, 2005 12:46 AM
>> To: A place to discuss Apple's G4 computers.
>> Subject: Re: [G4] Power Supply Problem
>>
>>
>> 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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