Hog iPC desklights won't turn white

Hi, I have a Hog iPC with a USB playback wing. The desklights on the iPC won't work on the 'white' setting, but work fine on blue. The desklight on the USB wing works prefectly in white or blue. The desk lights themselves are fine (I swapped them to the USB wing and they work fine on there) so it's most likely an issue within the iPC itself.

Has anyone else experienced this issue? And if so, does anyone know how to get the desklights working in white?

This console is from 2006 and I've only been using it for a week so I have no idea if the desklights originally worked in white.

Thanks!
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