Machine has has a Fanuc 0M -A control . One of the first Elox/Fanuc machine to go with ac servo drives .Machine had a 14 inch color CRT originally .Many year's ago I replaced the CRT display with an LCD conversion .The only part removed was the crt all boards are is in the machine .And it has worked perfectly for a long time . Lately the screen wont turn on and I have to repeatedly turn it on turn it off and after 5 minutes or so it will light up .No error messages .Machine still has the crt card in the mother board and I would guess it is problem or the board the CRT card plugs into that sits next to the CRT chassis . Has anyone had to trouble shoot this type of problem ? THANK YOU FOR ANY HELP .