Has anybody have a HP 1740A scope that could take the time and make some resistance measurements on the HV transformer secondary. My unit is in excellent condition for being 35 years old. I was using it last week and the HV quit. It appears to be the transformer that is no longer available from HP. The secondary is center tapped to ground. The readings across the full winding is 159 ohms, the reading from the center tap to one side is 27 ohms and center tap to the other side is 185 ohms which makes no sense if the full winding is 159 ohms. The HP part number is 01740-61101. The scope is about to become a wheel chock. Any help would be appreciated.