Touchscreen went white, now doesn't come on

sony handycam dcr-hc52 was working fine. Hasn't been dropped, or has not got wet. Turned it on 2 days ago & white screen on LCD. Small camera eye view screen works fine. I opened & closed the touchscreen several times & then suddenly the LCD touchscreen quit coming on all together, but eye view piece still works. Any ideas? Maybe a loose connection? I have all my son's childhood pics/movies on DV mini tapes would hate to loose them before I could transfer from camera to digital device.

Thank you for any help..