an additional info to my previous post: after replacing the transistor.
it stopped ticking. i measured the main B+ when not connected to video
card. its only +90v. i think it should be 200. now, i noticed that when
i connect the video cable to the video card, it attempts to display the
information but resulted to whining on/off and blinking of power led
(green color).Then i noticed the high voltage come & go. i measured the
voltage during this phase. it rises and falls back to 90v.
what am i missing?

thanks in advance,

ian