Jim and I have been e-mailing back and forth on this and I agree with George. Jim has done everything possible to identify the problem. It's truly mistifying. But FWIW I have Gary's 4xSPDIF mod on my BD 83 and it works beautifully. Gary, just a thought: when Jim returns the Oppo if you don't have a replacement available install one of Shawn's updated boards. At least that will eliminate one variable.

Ken

Main: G68J, 5K2s, 5Ks, HSU subs, Pio 151FD, Dish VP722, Roku, Wadia I70, Anti Mode Dual Core, Oppo 103D Vanity Lite
Office: SBT, Berkeley Alpha DAC 2/MQA, Magico S3 Mk II, Boulder 2060, Lumin U1 Mini streamer, Roon.