Measuring + B for 125 v is normal, observation kinescope filament is not bright, check the line scan circuit has no job. Inspection on line scan circuit, found no voltage line drive tube collector, check the primary coil end of the line drive transformer have 12 v, on the other side no voltage. The result of line drive transformer primary coil circuit. With normal line drive transformer after substitution. The TV doesn't work. Considering the machine line driver stage to the 12 v power supply. Can't use common high voltage power supply line drive transformer substitution, decided to repair the original transformer. The transformer as subminiature, use the "workers" type high frequency magnetic core winding, first remove the outer layer of the secondary coil, primary coil layer upon layer will be removed again, find the breakpoint followed by good. Then coil winding as is back. Although hand around the back of the coil not neat, but does not affect the normal use.8uHservice manual download site