Hmmm………. this is a LCD . Lcd would suggest an inverter board, or sometimes the power supply will include an inverter that will illuminate the screen. I would suggest you go to the power supply for a fix. Look for capacitor locations C201, C206, and C253. If these are bulged, replace these. Should be a simple fix. Find a electronic hobbyist to do this for you.
Thank you for asking, Matt of Martin’s TV Repair.