My kids messed with my machine and I'm not sure if it was their doing or just a timely repair. My LCD screen and touch buttons were totally non-responsive. I did the trick of touching the screen, turning off the power, turning back on, then removing my finger. That enabled the selection buttons to work but, still, nothing shows up on the screen (so I don't know what stitch I've selected or width I've got until I test on scrap). It appears like the light is fine on the screen- it brightens when turned on, but nothing shows up.

Is there anything I can try to fix this myself?