Industrial PC display

[Gianni]

I have this industrial PC with display problem: image of the internal display connected by LVDS connector is blurry.

I connected an external monitor using VGA connector: image is clear but tends to yellow.

I tried to use a PCI videocard but I failed to install driver, I wanted to see if using an external graphic chip the image were normal.

I think the graphic chip is damaged so it is not possible to solve the problem.

What do you think?


Ciao
Gianni

[Per Hansson]

Re: Industrial PC display

It could be a bad cable, I don't remember if I have posted about it but I made a LVDS breakout board for a Siemens industrial PC.
In my first test I did not use twisted pair cabling and then it looked exactly like in your pictures...
So could be bad cable or bad connectors maybe?

[stj]

Re: Industrial PC display

strip out the display and clean any dust from between the lcd and outer plastic.
it's a common problem with industrial touchscreens.

it may not be the problem, but it will help.

[Gianni]

Re: Industrial PC display

Well the cable is glued on the connector... I should try to remove it but I am afraid it will break.

I have no a spare LVDS cable...

Anyway if it is the LVDS cable... why the VGA is yellow? Even with the LVDS cable removed the external display is yellow.
That's why I think there is something wrong with graphic chip.

I have to ask my friend if I can try to remove the cable even it it is risky due to glue.

Thanks for your answers.
Gianni