Display flicker/pop & sleep issues

My emac has been without problems (I have owned it for 3 years) until the last few weeks. The first problem was with it not waking from sleep. I have read a number of discussions and decided to put my emac to sleep manually - so far so good.
The most recent problem happened this morning - the display flickered / popped / blipped with an audible sound like a click or static type charge sound. It did it twice within a matter of seconds. It didn't seem to affect anything I was working on and hasn't done it since. I read the other discussions that are similar to my situation. My computer serial number is outside the extended repair offer. I did read one discussion that pointed to dust and humidity causing arcing. I do live in a dusty environment and lately the humidity has been much higher than normal.
Is it possible these two problems are related? I have had a few power outages due to thunderstorms in the past 6 weeks or so. I do have my computer plugged into a power strip with a reset button. No problems with restart due to power outages.
How damaging is dust and humidity? I don't live in an area close to a certified repair center.
I am not a computer tech type - but I am willing to try simple solutions/repairs as long as I am not creating another problem by doing so.
Thanks for any insight

annaperenna,
Force shutdowns due to a power outage aren't good for any computer. If there are storms in the forecast, it's better to play it safe and shut down all computers in advance of a storm. It's also more useful to use not a power strip but a true surge protector (Tripp Lite Isobar models are excellent), or better yet, an Uninterruptable Power Supply (UPS) such as one of the BackUPS models from APC --- a UPS also protects from momentary outages and brownouts.
Opening the eMac to check for dust and to clean the isides is not a trivial procedure as the eMc is tricky to open if you want to put it back together. But you can check the front air intake vents under the front edge of the eMac and the fan exhaust vents on the back. Visible dust in either place can be carefully cleared either maually with swabs or with a computer vaccum (don't use a regular vaccum; the air flow there is high enough to create dangerous static charges inside the electronics). Using canned air to blow the dust out isn't really advisable as it's possible to blow dust deeper inside the computer and make things worse; that said, if you want to go ahead with canned duster air spray on the rear exhaust vents, so it with the computer turned on so that there's a positive air flow out of the computer, and hold the can at a 90 degre angle to the side of the eMac so that the canned air is blowing across the vents, not into them.

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    Message was edited by: tlc-65

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    About the time the Leopard came out, I upgraded my G5 iMac from a 250GB HD to a 750GB HD. The old original drive was a Maxtor, the new drive a Seagate. Since Maxtor is no more, and Seagate is supporting the last lines of Maxtor drives, I figured it was the best choice (I could have gone with a WesternDigital which would have been cheeper).
    Anyway, I reinstalled my Maxtor 250GB drive, which had Tiger installed, and with the Display sleeptime of 1 minute, and the System sleep time of 2 minutes (screen saver was disabled), the bezel light would stay on and react to ambient light for about 2.25 minutes. It would then start to cycle thru bright and dim, and at the same time you could hear the fans and HD power down.
    I tried a similar experiment using my external WesternDigital "My Book", 500GB drive, connected via FireWire400. It too had Tiger installed, but the system would never sleep - even after 10 minutes. (Small wonder when you consider it is connected externally.)
    I also wanted to mention that I tried resetting PRAM and the SMU without any obvious changes.
    So, at this point I am just giving in to the fact that I have to specifically tell the system to sleep via the Apple menu, or shut down altogether. I will keep looking into this, but won't be using as much time as I have been.
    Oh, and I found that the bezel light is supposed to react to the 'Ambient Light Sensor', and ambient lighting, when the system is in sleep mode - but in all cases I have seen and experienced, it should only do this between the time the display goes to sleep, and the point where the system shuts the fans and HD down and goes into low power sleep mode. At that point the bezel light should cycle bright and dim, and the brightness should be in relation to the ambient lighting.
    Best of luck to anyone else with this or similar issues.
    TLC
    Message was edited by: tlc-65

  • PM G4 AGP sleep issues in 10.3 Just a need to upgrade?

    Hello everyone. Long time reader/lurker, first time poster (usually can solve the problems by searching, this time, no)
    The concern: Are my components or OSX version too old and that this is causing the sleep issue I am having?
    Well, my problem first: When I set the computer to sleep, the screen goes off, the drives spin down, but the power and system fans remain on, and the front green light remains lit. Now, I made sure all the little things were off (file sharing, firewall, fax, etc) made sure every program in the dock save the finder was quit, and set the system to sleep via the the apple menu, and via the power button on the G4.
    Oh yes, I also unplugged the USB Hub as well.
    The tricky part. I rebooted in OS 9 (ah the love of dual-boot) and set the system to sleep and... It worked perfectly!! the amber light, the fans all off.
    So, the system specs:
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    2) two (2) SCSI ULVD internal HDs
    3) ATI Rage 128 Pro
    Type: display
    Bus: AGP
    Slot: SLOT-A
    VRAM (Total): 16 MB
    Vendor: ATI (0x1002)
    Device ID: 0x5046
    Revision ID: 0x0000
    ROM Revision: 113-63001-108
    4) ATI Rage 128
    Type: display
    Bus: PCI
    Slot: SLOT-C
    VRAM (Total): 16 MB
    Vendor: ATI (0x1002)
    Device ID: 0x5245
    Revision ID: 0x0000
    ROM Revision: 113-57407-204
    5) Int. Zip,
    6) Original DVD-RAM drive
    Thank you all!!
    -Doug

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    Type: scsi-2
    Bus: PCI
    Slot: SLOT-D
    Vendor ID: 0x1000
    Device ID: 0x000b
    ROM Revision: 1.4.3f1
    Revision ID: 0x0007
    SCSI Bus:
    SEAGATE ST318203LW:
    Capacity: 16.96 GB
    Manufacturer: SEAGATE
    Model: ST318203LW
    Revision: 3700
    Removable Media: No
    Detachable Drive: No
    BSD Name: disk1
    OS9 Drivers: Yes
    Target: 0
    SCSI LUN: 0
    Macintosh HD:
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    Available: 4.61 GB
    Writable: Yes
    File System: Journaled HFS+
    BSD Name: disk1s6
    Mount Point: /
    QUANTUM ATLAS 10K 18WLS:
    Capacity: 17.11 GB
    Manufacturer: QUANTUM
    Model: ATLAS 10K 18WLS
    Revision: UCH0
    Removable Media: No
    Detachable Drive: No
    BSD Name: disk0
    OS9 Drivers: Yes
    Target: 1
    SCSI LUN: 0
    Macintosh HD 2:
    Capacity: 17.11 GB
    Available: 722.87 MB
    Writable: Yes
    File System: HFS+
    BSD Name: disk0s5
    Mount Point: /Volumes/Macintosh HD 2
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