Welcome to the MacNN Forums.

povvy · Apr 2, 2003, 10:48 PM

Tonight after shutting down my G4 (Dual 867MHz MDD) to blow some dust out of it, and booting back up, the monitor (19" NEC CRT going from DVI-VGA adapter to GeForce4 Titanium) obtained a blue-green tinge to it.

My first thought was a bad monitor, so I tested it with my iBook and it looked perfect. I then checked the pins on the monitor cable and the adapter, those were fine. I then reseated the AGP card, booted back up: blue-green screen.

I also ran the Apple Hardware Test CD. Passed both the basic and extended tests.

So, here are my guesses:

Situation A: Card has gone bad. This would suck. I bought the card through MegaMacs.com in February and the 30-day warranty that came with it is obviously gone.

Situation B: DVI-VGA monitor has gone bad. Any way to test this? I might have to get Apple to send me a new one.

Situation C: Some weird system issue. Anything you guys can suggest to test on the system? Or any weird glitches I might not have heard about?

Thanks in advance, and if you have any information to contribute it would be greatly appreciated. I really don't feel like spending another $300.

Patrick.

povvy · Apr 3, 2003, 03:41 PM

Anyone have an idea?

I never seem to get any replies on this forum, heh.

Patrick.

Phil Quinney · Apr 3, 2003, 03:58 PM

Whilst I may be off here, a blue-green tinge on the screen would shout "interference" to me. Do you have any unshielded speakers nearby that you moved when testing it with your iBook?

I can't say exactly what the problem is, but you've already eliminated the monitor as a fault. When you were booted from the HW test cd was the image normal?

Hope this helps you,

Phil Quinney

povvy · Apr 3, 2003, 04:21 PM

No, the monitor has no interference on it. And the image was bad on the hardware test CD. Interference wasn't a concern because I didn't move anything when I tested with the iBook.

But... I just realized now that when I jiggle the adapter cable, the image goes normal briefly. It looks like it's the adapter, so I called Apple and they are sending a replacement adapter.

Whew.

Patrick.

Phil Quinney · Apr 3, 2003, 04:27 PM

That was my next suggestion

My brother's old 17" has a habit of being pink - which I must admit adds a bit of colour to the linux prompt it runt (PC, see.)

Glad it got sorted for you.

Phil.

cgc · Apr 23, 2003, 01:58 PM

If you don't have a television or speakers near the monitor I would try to degause it (check the monitor's menus). I had a similar problem and that cleared it up.

gatorparrots · Apr 23, 2003, 04:05 PM

I have an 17" ADC connector display and it gives that blue-green tint if the connector isn't seated properly on the video connector of the video card. If the cable is bumped/moved/jostled, sometimes it takes a few tries to get the blue-green cast to go away. I'm not sure if the issue is in the ADC connector end itself or on the ADC port on the included AGP video. Perhaps I should find out for sure before my 1-year warranty lapses...