Another_Paul

Hi all,

When I use SLOT 1 on my 1st gen Intel iMac 20", my computer randomly reboots after running a few programs. Very highly annoying.

I've run MEMTEST with some interesting results that don't totally make sense but here they are:
This test is done in Single User Mode, OS X 10.5.2 with PC5300 DDR2 667MHz OWC RAM.

Each Slot test is run individually-none of these tests are run with both sticks installed.

First Test Run for RAM stick A:
SLOT 0=Pass
SLOT 1=Fail but did not reboot on its own

Second Test Run for RAM stick A:
SLOT 0=Pass
SLOT 1=Pass

First Test Run for RAM stick B:
SLOT 0=Pass
SLOT 1=Fail with self-Reboot (computer restarted on its own)

Second Test Run for RAM stick B:
SLOT 0=Pass
SLOT 1=Fail with self-Reboot (computer restarted on its own)

It seems that with RAM A it doesn't reboot by itself in SLOT 1 but it will reboot if RAM B is in SLOT 0.
All signs point that SLOT 1 is faulty.

This computer doesn't have Apple Care.

eMacMan

While not common bad RAM slots can occur.

Test is this: Run Stick A in suspected bad slot with "good" slot empty.
Repeat with stick B
Then: Run stick A in good slot with "bad" slot empty
Repeat with stick B

If computer runs perfectly with either stick in one slot but has issues with either stick in the other you have confirmed and isolated the bad slot.

If computer runs perfectly with one stick in either slot, and fails with the other stick. The issue is a bad RAM chip. Again you have isolated which chip.

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Another_Paul

Sorry, I should have been more clear...Each Slot test is run individually-none of these tests are run with both sticks installed. So it looks like I have a bad Slot 1

Has anybody got a 2GB stick to work in my 1st gen Intel iMac before? That looks like my only option to get maximum RAM for my iMac now.

FlaminWiz

Since you have a bad slot 1, does that mean its under warranty and you can get it fixed by Apple?

Another_Paul

Since it never had Apple Care the warranty now is looooong gone

FlaminWiz

Its over the 90days or 1 yr of free warranty?

Another_Paul

It's over the 1 year. This machine is probably about 2 years old now.

FlaminWiz

But if it was still under warranty, could you still get it repaired?

monokitty

If it was under warranty, yes, but it's not under warranty.

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Another_Paul

If it was under warranty, I would have had Apple fix/replace the logic board.