Broken screen on Nikon D3. How can I fix it?

Question

I've a Nikon D3. One day unexpectedly the rear LCD screen has stopped working. It shows only white lines, as in the attached pic. I've changed 4 screens:

• the first: shows only few light green lines
• the second: shows a little more lines, but this time are white
• the third (maybe the only broken screen): works only the backlight
• the fourth: works like the second (is the one of the pic)

If I use HDMI it seems to work fine.

Can anyone tell me what might be wrong?

Answer 1

"Various copies of the same (active electronic) component working flawed in different manners each" tends to be a telltale sign of either:

• some signal lines being disconnected, leaving inputs not connected to anything (due to tolerance or design revisions, a "floating" input can be interpreted differently by each copy)

• marginal power supply to the component (each copy will have different exact power draw, making a failing power supply react differently)

• marginal signal quality on some line (upstream component sending the signal is failing. Again, interpretation of marginal signal is copy-dependent).

Answer 2

This camera is not meant to be consumer-repairable. When you face a problem like this, send it into a Nikon repair center for repair.

Answer 3

You can't fix the screen, because it apparently isn't the screen that is broken, but rather something else that provides the signal to the screen.