If I have change the chip, I think that I'm going to look other D-e905, because I'm not a professional xD.   Thank you so much for your help

Thanks for your fast answer. When I push play buttom the laser Head only down. Usually in other CD player the laser Head Up and down, Up and down. But this player doesn't do that. Thanks

Hello,    I have a D-E905, its sound is pretty good, the problem is that I put the cd into the discman and the CD spins but in 10 seconds the cd stop, on the remote control says "No disc". What is the solution?    Thanks a lot.