Left right headphone problems

I just bought a mpc1000 and it's in like new condition, however after I started to play I noticed a couple of the pads only had sound coming out of either the left or right side only??? What could be wrong? I did get an adapter for my headphones but it's not all the pads. Help me out please

Please help

could be any number of things. smoke a spliff i always say

^^ what he said

..and read the manual

313 studio tricks wrote:could be any number of things. smoke a spliff i always say

Haha you know what I did that and some dabs and updated my os and it fixed haha