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weird snow on iMac flat panel when wake from sleep?

Message #1 - Posted 2003/11/09 - Diane Verbaan

Hi

My brand-new 1 GHz flat-panel iMac displays some weird snow when waking from sleep.

http://www.xs4all.nl/~eur/PB090006.JPG

It lasts about a minute, diminishing slowly.
The longer the sleep period, the worse the snow. Above picture is from a full night of sleep. But after 3 minutes sleep, some snow is visible.

Has anyone seen this?

The helpdesk said: reboot. It is gone then, but if you wait a minute it is gone too. After some minutes sleep, it's back.

If this were not a $$$ brand new computer, I would not mind, but it is. An Apple, no less.

This iMac has been repaired once: the sound on the motherboard failed after only two days :-(
The Apple-Certified repair shop swapped the motherboard which probably removed the serial number from Apple Profiler.

My Mac-loving friends tell me me to grab it by the neck and throw it through the window of the Apple store :-)
Trouble is, the Apple Store is virtual in Holland.

Groeten,
Diane Verbaan

Message #2 - Posted 2003/11/09 - Brian Paul Ehni

On 11/9/03 6:43 AM, in article 9bcsqvkehffo5q5ehjl92546nfgfisu9t0@4ax.com, Diane Verbaan wrote:

Hi

My brand-new 1 GHz flat-panel iMac displays some weird snow when waking from sleep.

http://www.xs4all.nl/~eur/PB090006.JPG

It lasts about a minute, diminishing slowly.
The longer the sleep period, the worse the snow. Above picture is from a full night of sleep. But after 3 minutes sleep, some snow is visible.

Has anyone seen this?

The helpdesk said: reboot. It is gone then, but if you wait a minute it is gone too. After some minutes sleep, it's back.

If this were not a $$$ brand new computer, I would not mind, but it is. An Apple, no less.

This iMac has been repaired once: the sound on the motherboard failed after only two days :-(
The Apple-Certified repair shop swapped the motherboard which probably removed the serial number from Apple Profiler.

My Mac-loving friends tell me me to grab it by the neck and throw it through the window of the Apple store :-)
Trouble is, the Apple Store is virtual in Holland.

Groeten,
Diane Verbaan

Did it do this BEFORE the logic board swap? Video is built in on the logic board, so you may have gotten a bad board in the repair.

Message #3 - Posted 2003/11/09 - Diane Verbaan

On Sun, 09 Nov 2003 09:39:46 -0600, Brian Paul Ehni wrote:

"Diane Verbaan" <diane@xs4all.nl> wrote in comp.sys.mac:

My brand-new 1 GHz flat-panel iMac displays some weird snow when waking from sleep.
http://www.xs4all.nl/~eur/PB090006.JPG This iMac has been repaired once: the sound on the motherboard failed after only two days

Did it do this BEFORE the logic board swap? Video is built in on the logic board, so you may have gotten a bad board in the repair.

Good question. No, it did not.

I can't imagine an Apple Certified Repair Center putting in a bad motherboard, but I'll call them monday.

Groeten,
Diane Verbaan

Message #4 - Posted 2003/11/09 - gregory trimper

Brian Paul Ehni wrote:

My brand-new 1 GHz flat-panel iMac displays some weird snow when waking from sleep.
http://www.xs4all.nl/~eur/PB090006.JPG It lasts about a minute, diminishing slowly.
The longer the sleep period, the worse the snow. Above picture is from a full night of sleep. But after 3 minutes sleep, some snow is visible.

Did it do this BEFORE the logic board swap? Video is built in on the logic board, so you may have gotten a bad board in the repair.

Does look like either bad video memory or a bad video cable connection. Both could be the result of a logic board swap. Take it back, and perhaps ask for another one, rather than another repair.

lycka till!
GTr

Message #5 - Posted 2003/11/09 - Brian Paul Ehni

On 11/9/03 10:24 AM, in article gaqsqvc5if2mo4fkgk4hskatfrfngeof0e@4ax.com, Diane Verbaan wrote:

On Sun, 09 Nov 2003 09:39:46 -0600, Brian Paul Ehni wrote:

"Diane Verbaan" <diane@xs4all.nl> wrote in comp.sys.mac:

My brand-new 1 GHz flat-panel iMac displays some weird snow when waking from sleep.
http://www.xs4all.nl/~eur/PB090006.JPG This iMac has been repaired once: the sound on the motherboard failed after only two days

Did it do this BEFORE the logic board swap? Video is built in on the logic board, so you may have gotten a bad board in the repair.

Good question. No, it did not.

I can't imagine an Apple Certified Repair Center putting in a bad motherboard, but I'll call them monday.

Groeten,
Diane Verbaan

Bad parts get shipped all the time; they usually get caught by the tech, though. In this case, the fault may be due to the computer being on and at operating temperature. If just booted from cold, the tech might not have seen the condition.

Brian

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