Hi,
I need some assistance, woke up today to find I have lost the eight channel in my system. I have a ND555, 252 (sc) and nap300. I have checked the source by swapping with my old NDX2 and no fault found, I have checked speakers, cables and all interconnects and all fine. Only recent change (a few days earlier) was an upgrade to the ND555, however played perfectly for a few days. I have read suggestions it could be the 252, and also has it suggested to me it could be the nap300. I have tried resetting the 252 and different din inputs but no change. Any suggestions or guidance would be greatly appreciated.