Ok, a tad cryptic. <G> I've found the .pdf version of the HP 1000/M/E/F Engineering Docs, but every copy I've been able to access is missing section 9 (still can't keep track of the Roman Numerals they mark the sections with) which covers the power supply. There seems something a tad 'twinky' with mine, tho I seem to recall at one point someone had directed me to a jumper/resistor that needed to be installed at the 'Battery Input' connector on the rear to wake something up, but of course now that I'm working on it I can't find anything... Help??? -jim --- jimw(a)agora.rdrop.com The Computer Garage - http://www.rdrop.com/~jimw