Sony CDX-C5000R problems

hi all,
i had this cd player and it kept skipping and found out it was a faulty laser so bought another used cdx-c5000r thats been working fine.

only the other day it was working fine one minute, started skipping as it was a scratched disk so put a clean original cd and now it doesnt play any cds what so ever, just the radio works, even when the cd is in and i try and skip a few seconds of the track it just beeps but doesnt scan or skip just nothing happens and it doesnt make a laser loading noise now either

how can it just work one minute and not the next?
whats wrong with it?
help needed asap

cheers

ignore first post didnt put enough zeros and wont let me change