I have a quadra 700 that was great until recently when the video became corrupted, with a pattern shown here. This happened 'all of a sudden' while the computer was running.
I have a new power supply, and the video is fine if I use a nubus video card. The problem is only with the internal video. I removed all the vram and ram simms, and the problem persists. I am guessing this could be related to the on-board video ram, either a chip is bad or an address line.
If I move the mouse around I can 'paint' the corrupted pixels with the wrong values. The corruption is limited to the apparent columns, and there is a doubling of sorts.
I hope someone might have an insight by looking at this picture. Any suggestions or ideas would be very appreciated.
Thanks!
I have a new power supply, and the video is fine if I use a nubus video card. The problem is only with the internal video. I removed all the vram and ram simms, and the problem persists. I am guessing this could be related to the on-board video ram, either a chip is bad or an address line.
If I move the mouse around I can 'paint' the corrupted pixels with the wrong values. The corruption is limited to the apparent columns, and there is a doubling of sorts.
I hope someone might have an insight by looking at this picture. Any suggestions or ideas would be very appreciated.
Thanks!