they overheat dont they? thought slim lines were only supposed to be on 3 hours max? ive got a slim line one and its taken some punishment over the years but i only ever play it at most 1.5 to 2 hours at most, try cutting down play time see if it gets any better, coz my slimline one will read discs my big one wont and thats been kept safe, never dropped or knocked or smashed etc