Good afternoon, sometimes interpreting a value is half complicated because each manufacturer uses its own coding and not some reading with common sense and nothing more, figures and units in a body of such a large capacitor, I do not see the sense of walking reducing values to codes In short it seems that the capacitor is 300 nanoFaradios by 400 volts. If you are repairing a television, the best thing you can do is mention the chassis and address of the component, in some of those there are diagrams