Anritsu RF717A display

[Calmerto215]

Hi guys I have an Anritsu RA772ua radar unit running a RF717a display.
Up until a few weeks ago it was fine then all of a sudden when I turned on the unit I would get a “system error”on my start up screen. I would wait the two minutes to standby and press power to get the main display and all would be good.

Now when I turn on the unit the screen lights up but the display remains blank.

Any idea ???

[DeBe]

https://kasakovich.files.wordpress.c...2/ra772-mo.pdf This is an owners manual, & towards the end there is a detailed explination on System error