> Hi, > > I traced the 18Khz signal all the way from the moment it enters the > logic board until the video board (attached to the neck of the CRT). > The signal is there (it has different shapes but it is 18KHz). The
No, that is a different 18kHz signal. That is the video, which will have a significant component at the horizontal frequency. It starts from pins 6 (intensity) and 7 (video) of the DE9 connector You need to trace on from pin 8 to transistors on the main board, right up to the flyback transformer. -tony
