My LetraTag was working fine, then I took the batteries out and tried to plug it into the wall outlet using the cord from my adding machine (it fit the LextraTag). Now it won't turn on at all! I've tried new batteries, rechargable batteries, the ac/dc cord with and without batteries in the LetraTag - all nothing! What is wrong?

Office Equipment & Supplies - Dymo - LetraTAG Thermal Label Printer