I have the Manual But it doesn't say anything about repairs The register will add things before you finish typing in the item say I am typing in 2.35 pounds at 3.99 I will hit the 2 and before I can even hit the next key it has added .02 under some item also it will start beeping (Error sound) when noone is even in the room I have noticed it does it if you touch the case in a few certain spots as well.
Hi.
Liquid in the keyboard is the usual cause. it runs down into the plastic membrane sheets inside and causes the computer section to think you are pressing buttons occasionally.
