i really dont recommend buying certain things off ebay, and honestly i think a used mpc 1000 could hav many potential problems. it could b just somethign to do with mpc 1000 as opposed to other models, but i had the same problem when i originally bought mine. it would switch off after about 10 minutes of usage. thought it was the os, thought i was my inexperience, the bloke i bought it off on ebay would just reply to my emails saying i just didnt know how to use it. it was definitely broken. it would constantly freeze, and there were always problems saving (altho this may hav been a problem with akai os at the time). so i sent it to get repaired (this is in the uk). oddly enuff the delivery company who collected the mpc from my house to deliver to the repairs company (akaì´s official repairs company is a shop called "cimple solutions") lost the mpc. so i actually managed to get cimple solutions to send me a brand new black mpc 1000 (this was just b4 it was officially released as well) as i paid insurance for the delivery. literally the most lucky situation in the world. so i only paid about 350 quid for a black mpc. obviously it was originally a broken blue mpc, but in the end...it turned better than i could hav ever expected.
moral of the story, if u r gonna buy an expensive electrical piece of equipment of ebay, collect urself, and test it. or better still buy from a second hand shop where u hav a much better chance of returning the item if it is broken. this is expensive eqipment, and i for one was very pissed when i thought i had to pay even more money to fix it. the guy i bought the mpc from had dodgy contact details, wouldnt return my calls. ebay were unlikely to do shit. so if the delivery company didnt lose my mpc, i would hav been screwed. ironic situation. but seriously be careful buying these sorta things off ebay. 8 times out of 10 itll work out good, but there r dodgy ppl out there. the guy i bought the broken mpc off also had top ratings, and was a power seller. i havnt used ebay sense as its scared the shit of me after that.