High Voltage Trouble Shooting

[vts1134]

Can any one give me a couple of pointers in troubleshooting an early B&W set with no high voltage at the crt anode? I've searched around the site but the only thing I could find is to remove the horizontal output tube from the set and meter the top lead. Can any one suggest any other general steps to take when testing a flyback, high voltage rectifier, and other components in the high voltage section. Having an emphasis on safety while working in that area of the set being the first priority of course.