Pokémon Pikachu / Pocket Pikachu (JP)

[Alex4U]

Today, i buyed a rare Pokémon Pikachu and a japanese version of the Pokémon Pikachu, i see it's very rare to found it, so, the USA Version doens' t worked the Speaker, i fixed with a mini-Speaker, and i cleaned the case,buttons, etc. And works great, same with the JP Version, but without the speaker,but i see the USA and JP version sometimes works the peedometer (?) (sorry) and works perfectly if i shake up and down the Pokémon Pikachu, i taked some photos of the motherboard of my Pokémon Pikachu (i googled and i didn't found any motherboard for show) i upload later, anyone knows if is normal? (The problem of peedometer?)