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You are here: MacNN Forums > Hardware - Troubleshooting and Discussion > Mac Desktops > powermac g4 quicksilver beep on startup....

powermac g4 quicksilver beep on startup....
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Mac Enthusiast
Join Date: Dec 1999
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Mar 19, 2013, 04:26 PM
 
hi there

I acquired a Powermac G4 quicksilver (innice condition)

but when I press the power button it gives one beep and the power button flashes on and off

does anyone know what one beep means?

I have taken out and reseated the RAM and swap the RAM sticks over - but it still gives a beep on startup - and nothing comes up on screen

Richard
PowerMac G5 Dual 1.8GZ, 2GB RAM, 150 & 300 GB Internal Hard Drives, AGP Geoforce 5200 64MB Graphics Card, Superdrive.
     
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Join Date: Jun 2000
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Mar 19, 2013, 05:42 PM
 
How many flashes? They'll repeat.
     
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Mar 26, 2013, 05:19 PM
 
Originally Posted by reader50 View Post
How many flashes? They'll repeat.
one beep and then the power button flashes twice in succession (two flashes = pause - two flashes - pause)
PowerMac G5 Dual 1.8GZ, 2GB RAM, 150 & 300 GB Internal Hard Drives, AGP Geoforce 5200 64MB Graphics Card, Superdrive.
     
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Mar 26, 2013, 05:52 PM
 
I tried swapping graphics cards - same thing

I tried swapping/reseating the RAM -same thing

I tried removing the pram battery and pressing the reset button on the logic board - same thing

anyone have idea what could be the problem?
PowerMac G5 Dual 1.8GZ, 2GB RAM, 150 & 300 GB Internal Hard Drives, AGP Geoforce 5200 64MB Graphics Card, Superdrive.
     
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Mar 26, 2013, 09:40 PM
 
Toughie. I'd start with a replacement power supply if you have one handy. Otherwise, I'm guessing motherboard.
     
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Mar 26, 2013, 10:02 PM
 
1 beep, 2 flashes = no RAM installed or detected.

Try booting with a single stick of RAM at a time. Try with different sticks.

If you're lucky, a single bad stick is holding everything else up. If you're unlucky, the memory controller is gone. Since it's soldered down (part of the northbridge chip) that means motherboard failure.

note: the QS takes PC-133 SDRAM unbuffered, no parity. Max size 512 MB per stick (1.5 GB max overall). In practice, it takes up to 256 MB sticks, and accepts "low-density" 512 sticks. Which turned out to be uncommon - most 512 sticks will recognize as 256 sticks, or not be recognized.
     
   
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