One channel loss in stereo mode for NuWave Phono Converter?

Has anyone experienced loss of one channel in stereo mode of NuWave Phono Converter?

My NuWave Phono Converter works well in my system. My friend bought one at the same time as me and had a channel go down but it took out his preamp as well. His Phonostage went back to PS Audio 4 months ago, not a peep from them since. Admittedly it had to be shipped back from the UK via the importer.

Thank you for your response. Still waiting to hear from PS Audio about this.