Hello colleague: change transistors Q701 and Q702 ... Q701 reaches its base a signal from the hetaer hor, ... Q702 reaches its base a signal from the vertical ... the two transistors have q, send the hor, and vertical signals to lc701 pin21 and pin22 ... so that the digitization on the screen is activated ... either one of them q, fail there will be no typing on the screen or menu ... I leave you an image for q, check the highlighted components ... greetings!
https://ibb.co/bUgnm7