really nasty video/display problem!

I have a Dual 1.25 G4 with the (rare) Radeon 9700 video card connected to a Sony SDM-X72 LCD display. A few weeks ago, I started spontaneously getting a horrible on-screen distortion; Neon magenta and green lines cover the screen making it almost impossible to see anything:
http://i37.photobucket.com/albums/e73/saikyan/picture1.jpg
This colorful mess appears at random. Restarting the computer fixes the problem about 90% of the time. Usually if I wait a few minutes the problem causing the distortion seems to stop, at which point I can move windows around and "erase" the colors as you would on a dry-erase board. I've reinstalled my OS (10.4) and swapped video cables. I've also reseated my video card, reset the PMU, zapped the PRAM, so on and so fourth. I've ruled out my monitor as the culpret... it must be either a software problem (I hope) or a hardware problem (more likely).
I'm out of options. Has anyone ever seen this before?? I appreciate any suggestions or help!

I'm not convinced that replacing the fan will solve the problem, but it's worth a try. It's possible that the damage has already been done due to heat (if that's indeed the case).
If you wish to try replacing the fan, it can be done with very minimal effort. Are you comfortable removing cards and working inside your computer? If so, I think you could tackle this. There is a replacement fan for the Radeon 9700 Pro card made by Vantec, and the one you want is the Iceberq 4 CCB-A4C. This is basically the same fan that I used (just a different revision for the GeForce 4 Ti 4600).
Removing the old fan and heatsink may be more difficult if the assembly is glued to the GPU chip as it was on mine. But it will come off if pried carefully. Then it's simply a matter of applying some thermal paste and attaching the new fan assembly to the card. The fan comes with a Molex power connector (typically used for hard drives) so if you have an available one that can be used to power the fan. The other option would be to use the existing power connector by splicing the old wires to the new.
There may be other differences between your card and mine, but the basic process of changing out the fan should be similar.
Good luck!
MDD Dual 1.25 G4 | 2GB RAM | Mac OS X (10.4.4) | Logic Pro 7.1.1 | AMT8 | Delta 44 | SoundDiver 3.1 PB2

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lease can anyone tell me wat to do ?
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Hello!
I just wanted to share my video display problem. Mine is a tx2-1375dx. When is turned ON cold, it shows rubbish, like the sequence shown next. The problem persists using an external video display or projector.
Then, instead, I warm up the back of the display with a hair dryer, not too much, but that feel the heat has transfered inside, the Tx2 runs just fine. I also keep a fan cooling pad underneath instead of having the inner fan run 24x7.
So I guess the video chip has a thermal sensor that is being signaled when the display is warm and then runs fine. This would mean part of the functionality of the video chip may have been compromised by heat on the motherboard.
Too bad a promising machine was so poorly designed inside. It becomes too hot to put on your lap, so is no longer a "laptop".
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Greetings from Central America!

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Hello -
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A link to a screenshot is given below:
http://www.postimage.org/image.php?v=Pq2IbXxS
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I'll try Apple again. Wish me luck.
Machine Details:
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2.8 GHz Intel Core 2 Duo
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So, after three days with new drivers, I may have found an ATI driver package that might be working.
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8-3vista32_dd59752.exe
Found here: http://game.amd.com/us-en/drivers_catalyst.aspx?p=vista32/common-vista32
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Boys n Girls
I am Currently restoring my Power Book after a significant meltdown.
Thanks for posting I too saw the shearing effect but shrugged it off thinking oh well I'll just reboot!
If you are seeing this Buy a fire wire drive NOW and Back-up.
I suspect the Video update changed a low level feature in the power management routines and this resulted in my Power book cooking itself.
I've got a 12mth old Hitachi 7200 PATA drive in my Power Book after the Apple Drive cooked itself soem tim back and I have now got to back-up and restore my whole system. Luckiliy I have plenty of Big fast firewire drives around so I'm imaging the corrupt drive and going to run the Hitachi tool on it via a WINDOZE Thinkpad. Then a combination of clean install of 10.5.x and a migration assisted restore should do it.
I'm really not very happy though! My Time machine image did not restore and the disk repair did not work. I have a corrupted asl.DB ( the log file for Apple System Logs) and the mac won't boot from its internal drive.
I'll post the resolution here as it happens I'm at hour Disaster + 24 so I'm really cranky!
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Regards

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A wire may have broken inside the mini DVI to S-video adapter. S-video uses one wire for the brightness, and one for the color information. If the color wire breaks you will get a black and white picture. Until Apple replaces the adapter, you could use the composite video output, but the picture will not be as sharp.

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Hi myvedioproblem,
Welcome and then for posting.
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Press the 'Accept As Solution' icon if I have solved your problem, click on the Star Icon below if my advice has helped you!

How many Touchsmart users have had video / display problems?

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http://h30434.www3.hp.com/t5/TouchSmart-PC/Hp-Touchsmart-IQ770-Desktop-Black-Screen/td-p/168263
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Glad you solved your problem Gaunja. Here's an update on my own.
When last heard from I had diagnosed the failure of my displays to boot up to graphics card problem in my early 2008 Mac Pro with my stock ATI Radeon HD 2600 by swapping out the same card from my son's Mac Pro and seeing the displays boot up fine. Before heading off to the Apple store for a new card I reinstalled my suspect video card just to see what would happen. The displays booted up fine. Now, two weeks later, again no video display--black screens--no signal from the graphics card. I rebooted the computer several times to no avail and was, again, about to head off to the Apple store for a new card. This time "just to see what would happen" I moved the graphics card to another slot and bingo, the displays are up. What can be determined from my experience to date?
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Just one man's experience with the "Mac Pro display, black screen" problem.

Display Format (Video) Frames problem

The timecode display when set to frames is not working correctly in CS4.
When you specify Frames instead of timecode it does not change.
Project Settings>General
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Can others reproduce this? Seems like a bug to us.
Link to reference in help:
http://help.adobe.com/en_US/PremierePro/4.0/WS3E67AF4C-B2A2-4f04-90B4-F8CCFB74B144.html

>Is there an official problem area that I can report this
FAQ:How/Where do I report a bug?
Cheers
Eddie
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Problems with the video display in iTunes.

I was hooking up my PowerBook G4 to my television, so my sister could watch a television show that I had downloaded, while I worked on some stuff online. I don't know what exactly the term for how I had it connect is, but I had my laptop connected to my televisionn so that when I drag the video box off my laptop screen to the right, it appeared on the television. That was fine until I dragged the box back into my laptop's screen. I made the video display so large that the shrink/enlarge tab on the bottom right corner of the video window is off my screen under my dock bar. I've tried exiting out of iTunes and even restarting my computer but iTunes is keeping the video screen that large and I can't figure out how to shrink it, any help would be greatly appreciated.

Pressing F9 and then clicking on iTunes didn't do anything, but I can close iTunes anyways, that isn't the problem. It is just the seperate video display window that is the prblem . As for the other suggestion I cannot right click, so I definatly cannot right click on the window. However if you know of a way I can get it to normal or even original size with out right clicking, that would be helpful.

No video displaying on my MBP

I bought my Macbook Pro last July. It's worked well since then. I had a minor run-in with Applecare because my battery was overheating and causing cracks in my top case. That same issue is happening again with my top case, and I'm not sure if it's related to this problem or not. I pray it's not because my warranty is almost up and I really do not want to go through those headaches..
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Recent programs I installed were Blizzard's Wrath of the Lich King Alpha. An expansion pack in testing for World of Warcraft. The Alpha was crashing due to some Assertion error. Could that have corrupted software on my laptop and caused my display problem?
At the very least, could someone tell me what Apple Stores usually do in this situation? I am afraid to come in and have them tell me I won't be seeing my laptop for a month.

Try starting in Safe mode. If the problem is still there under a safe start, then it could be a hardware problem and you will have to get it fixed under AppleCare.

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Hello,
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The problem can be viewed in the following video.
At the begining you can view that there is something weird as under the folder "Panoramas" there is a grey block where there should be the rest of the folders onmy disk.
Then, I try to select a folder on my disk MacHD or SaveSSD and everything is ok.
And when I come back on my disk MacSSD, everything is going wrong (it begins when I click on "Panoramas").
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My video was just to illustrate the display problem.
As I said before I had it when I import from my SD card. My common workflow is importing from the SD card to the MacSSD disk, with a renaming. That's why I choose copy and not just Add to the catalog.
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I don't really get what I did.......

*really* nasty video/display problem!

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really nasty video/display problem!