Instruct: Classify the given review as either positive or negative.
Query: How to fix cartridge problem

Loved this LeapPad, but after a while, it only worked with the original book. Doesn't work with any cartridge!!! Then I called LeapPad, they told me it's because the cartridge is dirty. What to do is to wipe cartridge with rubbing alcohol, then while the cartridge is still wet, push it in/out to the leapPad, so this will clean the leapPad's cartridge receiver also. This works like a charm for me.