I've found theDennis' documents you mentioned on how to build a complete dummy supply load for the 7104/7854 SMPS.
I will buy the necessary resistors... :-/
BUT the document only mentions the connections to be made (using the dummy load) towards P82.
IMHO the connections to P83 that performs the voltage sensing should also be wired in an appropriate manner.
Otherwise the low voltage regulator (board A22, schematic 16) cannot work!
Hi Max,
I checked that P83 can be left disconnected, like in many previous versions of power supplies. At the LV board there are resistors R76, R96 and R132 for this between the sense lines and the voltage output lines.
Are you using a variac? I have seen strange things when I cranked up the variac untile the spms starts. Later on I applied normal line voltage immediately.
Albert
