Hello!
I built my own 19 pin cable for my Cube and N4000A monitor, but I have some issues and want to determine if it's the cable likely at fault (noisy?) or if I need to recap or pursue other repairs in the display.
Here is a short YouTube video to show the issues:
https://www.youtube.com/watch?v=zKj6SRt6YgQI tried to tie in the shielding, etc., in my cable, but I don't have an original one for reference to see how they were originally assembled. I did add a ferrite core on either end as well, but no difference.
Ghosting is obvious and if you look you will see a few horizontal black line flickers happen (that's not refresh messing with the camera - those random black lines do flash randomly).
Appreciate any insights!
Best,
- Aaron
Hi,
Many years ago I had a custom cable made for a mono slab: the technician had used thick section cables and everything worked. But there was an annoying 1 mm ghosting effect that could not be eliminated. Later I bought an original cable and the problem on the slab disappeared. The custom cable also had that defect on my cube 68030.
Thanks - I've had a gut feeling the cable is likely at least partially at fault. Now the trick is finding an original one. I passed up the last one I ever saw on eBay because I was making this one and they seem few and far between.
My experience is slightly different. I tested all possible combinations with the hardware that I have: hand made cable/OEM, slab/Cube030, N4000/N4000A. From time to time, the ghosting appears on the N4000 display (the original and most troublesome one) and, like a ghost, it then fades away. Same with the luminosity: sometimes it starts very dim, then after some time with the screen saver on it gets back super bright.
I have recapped both displays a few years ago, but I only sporadically switch them on.
So, I suspect it may still be something linked to the capacitors (such as humidity or the like). Surely, though, an original cable is a must have, as the shielding of standard video cables may not be sufficient for dealing with the current carried by the power lines.
I see this kind of ghosting from time to time on my 4000B monitor but not to the degree as shown in that video. It's mostly horizontal where dark title bars transition to lighter background colors. I just assumed it was a characteristic of these types of displays. I do believe I read something from back in the day when these were new that they exhibited some degree of ghosting, and it was a common complaint? That said I do love the sharpness of these crts.