check the retrace cap and solder connections on the horizontal drive components. Mike Schoettinger <kc8lqu@xxxxxxxxxxx> wrote: HI, I have a 46" Hitachi big screen that I am working on. The model number is 46W500. The problem I am having is that it will keep blowing the horizontal output transistor 2SC5909 after about one day of use. Usually on some other sets I have worked on that has been caused by a bad flyback. But, I have no way to ring the flyback to check it. Any ideas? Does anyone have a schematic for this set? Thanks in advance. Mike Schoettinger 5 Star Electronics (937) 475-2240 --------------------------------- Local listings, incredible imagery, and driving directions - all in one place!