Oh no!

I appear to have bodged my Caiman since swapping an input cap out and inserting a 10uf tant (I have done quite a bit of trial and error bodging to it so it is my fault as it worked fine a few weeks ago).

Got a slight high pitched whine from my speakers when the Caiman has a signal connected. Tried Spdif from Squeezebox and also USB from PC both the same. As soon as a music source is detected the whine ramps up. It is not volume dependant just there all the time and particularly anoying when the vol is turned down and the signal still connected.

Wondering if it could be some sort of signal break through?

Any ideas greatfully accepted.

Regards