I think this is the problem though. I can be reasonably certain now that these units are wired for a two phase live supply and NO neutral. This is common throughout ASIA. India has stuck with its British heritage though with single phase and a neutral. This is most likely problem here as a result of a rogue "grey market" distributor. I suspect, in other words, his unit was not intended for the Indian market. May be bucksheesh involved as well somewhere along the line.\n\nwell dont know about the grey market stuff .the seller happens to be an authorized yamaha dealer and all products of yamaha intended for india is made in malasyia it seems.what bugs me though through this whole saga is that yamaha is missing in this whole equation.you have random yamaha technicians talking with not a single proper official detail about this.This is wat the seller too told me.he said he wants to follow this to its logical end and get to the bottom of it.\ni will keep updating this thread as and when i keep getting info so that any buyer in india is properly informed before a purchase as it clearly seems that none from any other region is facing this issue.\nbtw i also read in an amazon india thread about a yamaha Nsw-50 i guess subwoofer having electric current on the screws on its back.so theres smthng going on here.