[peterklos]

Hi I have a Fanuc OM with 9 inch mono monitor , all the monitor characters have vertical lines in front of them , before i get a new monitor any one know if its the monitor or the fanuc computer that is generating this , it some times disappears.

[RCaffin]

Looks like the graphics driver or maybe the graphics memory bus. But it could still be the display unit.

Cheers
Roger

[peterklos]

Hi Roger , Thanks , when I look at the monitor sometimes the characters change like a refresh or a digital process and sometimes they are OK as the monitor is just composite video i dont think its the monitor , i am leaning towards your suggestions of graphics driver or memory , do know where i can look for the graphics pcb of the fanuc om

regards peter

[RCaffin]

Computers I know; Fanuc I do not know.
Sorry. Ring Fanuc?

You could try to find a display which takes composite video. It would be an old one though.
Which city are you in?

Cheers
Roger

[RCaffin]

Hum ... looking more closely at the results, I am suspecting the addressing part of the graphics memory. I suspect one of the address lines is failing.

Cheers
Roger

[deeps05]

Hi I have a Fanuc OM with 9 inch mono monitor , all the monitor characters have vertical lines in front of them , before i get a new monitor any one know if its the monitor or the fanuc computer that is generating this , it some times disappears.

Hi
I can supply you LCD screen to replace the old crt, old crt will create problems so better to replace it with LCD display.
If you are interested, please feel free to contact us.

@:- [email protected]
Ph:- +91 8149636586

Regards,
Deepak

Sent from my vivo Y27L using Tapatalk

[regina]

What version of the OM is it? (the number on the main board) Are you using the on board graphics or a separate card? Of the graphics on the mainboard is failing maybe you could just buy a used card? It doesn't look like a CRT problem

[CitizenOfDreams]

This is definitely a video adapter problem, the monitor itself looks fine. Without knowing any specifics about Fanucs, my guesses would be:
- A stuck bit in the video RAM.
- A timing problem in the RAMDAC (or whatever you call a RAMDAC equivalent for a monochrome display adapter).