I have a cambridge audio 640 cd player (Azur 640C the reviewers’ favourite CD player!) and am not getting a signal from the right channel anymore.

The optical output works fine but my myryad pre amp does not have optical inputs so the only option is to fix it or get a external DAC.

So, any advice as to why this occured and any recommendations as to what DAC would be worth buying under $250?.

The cambridge audio has a Wolfson WM8740 24-bit/ 192kHz DAC