thanks for all
if this can help I have tried to connect a computer screen to the output connector for an out screen and nothing seen on the out screen.
is the screen of the tyros not good
Hi moshe israeli,
the screen out on T4 is always active: On a connected external VGA monitor, you should see either the normal internal display content OR the Lyrics/Text display (depends on the current display out setting on your T4).
But if NOTHING is displayed on an external monitor (and you have made sure, that the monitor supports VGA resolution 640 x 480 px, and that the monitor works properly on another device/PC, of course), I guess it is a internal hardware defect (possibly the Graphic Chip inside the T4).
Have you already checked the internal "ribbon" cables/connectors (to make sure that not a plug/connector is loose)?
Best regards,
Chris