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iPod Hardware and Accessories All iPod hardware discussions.

Powermac G5 light problems


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Smartz

 
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I've recently inherited a friends old Powermac DP 2.0 G5 after it died a death. After some testing I diagnosed that that PSU had died in it- something that seems quite common.

Having found some detailed instructions online, I sourced a replacement PSU and set about replacing it. All went well with no major problems. I put everything back together and then powered the machine on. The fans whirled to life but there was no video out. I then noticed that the power light was flashing twice and then a break.

I checked on Apple's website and it was saying that 2 flashed is no ram installed. Yet there are 4 sticks installed - surely these all can't be dead? Has anyone got any words of advice? I'll be gutted if it's the logic board as the replacement PSU was really expensive....help!
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pigoo3

 
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It's always possible that the ram in the G5 is not the original ram...or it was "upgraded" with incorrect ram.

I would pull all of the ram...and try the ram 1 stick at a time.

Good luck,

- Nick

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- Computer seems slower than it used to? Read this for some speedup tips: Speedup
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Smartz

 
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Hi Nick

Thing is I believe they have to be installed in matching pairs. I've since tried each of them in various slots but nothing...starting to question how well I put it back together- very frustrating.
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pigoo3

 
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Quote:
Originally Posted by Smartz View Post
Hi Nick

Thing is I believe they have to be installed in matching pairs. I've since tried each of them in various slots but nothing...starting to question how well I put it back together- very frustrating.
Yeah I forgot about that (installing in pairs). You have 4 sticks of ram right (2 pairs)? Maybe 1 pair is the original ram, and the 2nd pair was an upgrade.

I would look closely at the sticks of ram, and see if you can identify them as pairs...by the labels on the ram. The install each pair separately as pairs & see if that helps. Make sure the pair of ram are installed in the correct slots.

The problem with the G5 may or may not be ram related...but I know in the past when I tried using ram that I knew might not have been Mac compatible...I did get similar symptoms that you described.

God luck,

- Nick

- Computer slow, too many "beachballs", read this: Beachballs
- Computer seems slower than it used to? Read this for some speedup tips: Speedup
- Almost full hard drive? Some solutions. Out of Space
- Apple Battery Info. Battery
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And it may have been the logic board all along alas.
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