There haven't been any more replies, so maybe you've solved your issue, but if you haven't...
We managed to break our screen last night- dropped a metal file on the screen and cracked it. Anyway, after opening the unit, we discovered that it's made by
Kwikbyte. Called them, and they gave me a Digikey part number-
73-1285.
Maybe this will help you out. Prices are reasonable- $26.
Good Luck
G