These boards have been removed from mostly new TVS with broken screens and should work if properly installed. SONY XR75X90CJ TV POWER SUPPLY BOARD 100613323 / AP-321AM. Please verify that your board part number is the same as 100613323 / AP-321AM. The part number is the first number left of the /, or the sole number listed. Most often written in title as (part number / board number)