Your right, I'm not from the Philippines(even though my wife is, but that doesn't count, does it). I really am impressed with the quickness of your replies, so, thank you. I do have quite a bit of experience with electronics, but as you stated, a schematic would be invaluable here(as well as repair manual).
In the meantime, I will wrestle with ups about the arrival of the Cayin A 70T. When everything is said and done, I still feel that this worth it. More than likely, I will have additional observations after I have 'sat in' with the system for awhile.......
cheers, Greg