LeapPad Plus Writing speaker does not work

SOURCE: my leappad plus writing won't

If it does power up, and you are unable to get only the Go button not to function, there could be 3 problems
1. the cartridge is dirty
2. the sytlus is bad
3. the sensor membrane is wet or bad.

Clean the cartridge or try another book.
Replace the stylus.
Dry out the leap pad (this is a last resort. place the leapPad in a sunny window for a day, standing upright and open (remove batteries).)

If nothing else works, you can find another leapPad at most thrift stores (that works!), for about $5-$25 (any model, but you might not get a lot of model choices, but some even come with books and cartridges you might not have!)
Take a book and a cartridge with you, maybe even batteries, and ask the store if you can try it before you buy it (they will usually let you test it)