Chosen Solution
I have a Toshiba 40L1333DB with what appears to be an inverter problem on removal of the back there doesn’t appear to be one is it built into the power board, because there is only the power board and main board there , also when I search for an inverter for my model there aren’t any available
@geoff_crane reason for that is that your TV use an LCD backlight, not CCFL’s. The backlight circuitry is built into the power board. Post some images of your power board so we can try to assist you with further troubleshooting. Use this guide for that. In case of your TV you would not replace an inverter but the power board.
