Question about Apple iMac G4 Desktop

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Pixelated titanium g4

Hey JSPC....
i have a screen that 'seems' intermittintly going into HEVAVY PIXELATION...
but when i plug in a DVI connector (not connected to any device) it MOSTLY goes away.... when i un-plug it, it;s better for a minute or 2 and the returns...
MOTHERBOARD? ....
thanks
rd@nynoise.com

Posted by on

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Your logic board and graphics chips are fine. But it's possible that some of the settings have been corrupted which is causing the problem. To rectify this, first of all in the Display settings (in the system preferences) click the button to 'Detect Displays'. If that doesn't help it you just need to reset the PRAM. Here are the links to the Apple site for instructions on how to do this:

http://support.apple.com/kb/HT1379?viewlocale=en_US

If the computer is a PowerBook (as inferred by 'titanium' in your subject heading) rather than an iMac then you can also reset the PMU:

http://support.apple.com/kb/HT1431?viewlocale=en_US

That should hopefully sort it out. By the way, just to help us out when giving a diagnosis be sure to put the item in the correct category (Titanium g4 isn't an iMac) just to avoid confusion.

All the best
Sean

Posted on Dec 25, 2008

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Posted on Jan 02, 2017

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Hello Anon, it seems you may be looking at a driver conflict here. Setting up this project is easy; bring in a second monitor and prepare to swap between the two frequently.

1. On the Eizo's menu initiate the self calibration.
2. When the Eizo completes the self calibration and the Pixelation persists, uninstall all the Graphic Card drivers on your computer.
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Source:
http://www.tomshardware.com/forum/304706-33-completely-uninstall-graphics-drivers-install-ones
http://en.wikipedia.org/wiki/Graphics_display_resolution
http://www.eizo.se/default.aspx?page=11&product=CG277-BK

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HI Nick, I had a similar problem with my Titanium G4 Powerbook in the past. The batterry lights showed OK, and at first glance the original Apple transparent saucer shaped power adapter seemed to be working. But then I realized that the very thin conducter wires were broken where the flexible wire meets the connector plug. I cut into the plastic insulation and soldered the wires-a very tedious exercise I might add. This worked for a few weeks, and as I was at sea on a ship, it kept me going. But before long the same problem occurred-an apparent dead computer. I solved the problem by purchasing a 65 watt power adapter from PowerbookMedic. It was dirt cheap and I haven't had a single hiccup since, and that was 3 years ago. You can always see a Genius at an Apple store, if there is one close to your home. These people are amazingly helpful.

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I would like to know what adapter (DVI to VGA Cable Adapter) I need to connect to a Macintosh G4. Thanks


Without knowing what Model Number of MAC G4 you're referring to, I can only give you generic information.

If your MAC G4 has a DVI port it is generally the female style.
The DVI connector on the adapter will need to be a male DVI style.

The VGA end of the adapter will be either male, or female. Most VGA connectors on a monitor cable have a male VGA end.

(The DVI end will have the pins sticking out on the adapter. The VGA end will have the socket holes)

Also stated as the monitor cable end will be a DVI male. The port {Connection} on the computer is a VGA female)

Example of a DVI male to VGA female adapter,

http://sewelldirect.com/dviaftovgam.asp

Barring that you need the other style of DVI to VGA adapter, (DVI female on the monitor cable, VGA male on the computer), this is an example,

[ Note* The newer VGA connectors are also known as an HD-15 connector.
More information on the Video Graphics Array connector,

http://en.wikipedia.org/wiki/VGA_connector

More information on the DVI connector styles, and the Digital Visual Interface technology,

http://en.wikipedia.org/wiki/Digital_Visual_Interface

If you should find all of this confusing, simply state in a Comment as to what connector is on the end of the monitor cable, and what connector is at the computer.

State whether the connectors are Male (Pins sticking out), or Female (Socket holes)

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First, monitors. Unless you have a great hook up from the next level, you will most likely have a:
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  • DVI monitor. Most DVI monitors do have atleast a VGA input.
DVI is digital and far more robust, but the cables and connectors might not outweight what you gain from it if you're not using it to, watch movies, edit video and or edit high resolution photo. If you already own a DVI monitor, then I feel the cable ( if 3-6 ft) and the "possible adapter"
($20) is well worth enjoying what you've paid for.

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If you need to cross over VGA to DVI and DVI to VGA adapters are available, but you will then have to make note of the gender of the connecting port or cable end.



So, if you own:
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  • Older Titanium Powerbooks, pre 667Mhz have a standard VGA on the rear.
  • 667Mhz-1Ghz Titanium Powerbook, all Aluminum Powerbooks, and ALL Macbook Pros have an on-board DVI female ports. In the rear for TIbooks and Rear right side on Aluminumbooks and MBPs.
  • All Macbooks utilize mini DVI.
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Connect a display to your laptop. If you get a picture, than more than likely, any component from the cable that runs from the motherboard, up into the display panel, to the inside of the display, is faulty.

If you do not get a picture, than its highly possible the video card or GPU has failed.

If you could specify your model, I can further assist you.




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