well i only bought it to see how a dedicated cdplayer sounds, seems i didn't achieve that.
I am certainly not preapared to spend a lot of money on it, no chanche to replace DAC or something like that; i was hoping to find a faulty supply rail caps or cheap stuff
as a hail marry i tried to resolder the dsp ,digital filter and DAC, but still nothing. Maybe someone more experienced could identify the fault but i gave up.
Thank you all for your help, especialy mooly