BA11-K low AC output levels

I am working from memory, but IIRC there's a connector with 8 black wires that carries the transformer secodnary connections (4 windings, 2 wires per winding). It goes into the power distribution PCB, and each winding it then connected to one of the regulator 'bricks'. Now, you should see 20-30V _between the 2 wires going to a particular regulator_. Not between either wire and earth. If you measure the voltage between a particular wire and earth (logic 0V rail, case, whatever), then you'll see one of 2 things. 1) If there's no regulator connected to that winding, you'll measure 0V. The winding is electrically isolated from the rest of the machine 2) If there is a regulator connected, then each wire will swing between ground and the full secondary voltage at mains frequency, due to the action of the bridge rectifier in the 'brick'. Now, what that will appear at on your meter depends on the meter, but I could well believe some would average it out to half-voltage. So that's the first explanation, you're measuring the voltage between one end of the secondary and ground, not the voltage across the secondary. A second explation, if you are measuring the voltage across the secondary, and it's half what you expect, is that the primary windings are wired incorrectly. The power transgformer has 2 primary windings, rated at 115V each. For 115V mains, you connect them in parallel (taking care of the phase, of course!), for 230V mains you connect them in series (ditto). The primary windings go to a 4 pin connector that plugs into the front of the AC input box. There are 2 different AC input boxes, for 115V or 230V mains which connect the pins of that connector appropriately -- there are other internal changes relating to the mains switching contactor and its control supply. Is it possible that you have a 230V unit plugged into a 115V mains socket? I thing it's very unlikely to be the transformer. Shorted turns would make it get hot and bothered very quickly. -tony