I don't recognise that model number, so can't check the error code (they aren't all the same), but four flashes is often an error from the LCD panel. It could well be the inverter at fault, as this is part of the panel - although some of them have been made available separately from Sony spares. Some inverters have tiny surfacemount fuses on them, and failure of that will cause the LCD error code - but there's no circuit for the inverter, it's NOT a Sony part (it's bought-in as part of the LCD panel).
As for cheap components, Sony don't really use them, at least not in Europe - so you don't get the duff electrplytic problems that beset the cheaper brands.