Noise from Primare SP32

Hi all , I have an annoying noise which has started on my system , kind of a tapping noise through the speakers , I have tracked it down (I think) to the processor (primare SP32) I mainly hear it with the sky box which is connected with hdmi .
I don't seem to have the noise whilst using my HTPC which is connected with analogue inputs , I have tried disconnecting and reconnecting all connectors .
I also hear it with the test tones , here is a you tube video of the noise I recorded earlier

Speaker noise from primare processor - YouTube


I haven't opened the processor yet , just wondering if you guys had any ideas of what to look for ? .
regards..
 
Update on this , I found the offender , it was a smd cap on the DSP board , I replaced it with a through hole cap just for testing , is there any benefit in replacing it with an smd or leave as is ?

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