Hifirob2
NEC and Klipsch rock!
I found the service manual for the NEC A230E, which is a few years newer than the AUA-5000E, but is also 25 watts per channel, and looks to be a similar design. Maybe the schematic in the service manual would be "close enough" to be useful in determining voltages.
It can be downloaded here:
http://www.hifiengine.com/manual_library/nec/a230e.shtml
Or, send me a private message with your email address, and I'll email you the pdf file.
It can be downloaded here:
http://www.hifiengine.com/manual_library/nec/a230e.shtml
Or, send me a private message with your email address, and I'll email you the pdf file.