These boards have been removed from mostly new TVS with broken screens and should work if properly installed. SONY XR55X90J TV LED DRIVER BOARD A5026318A / 1-010-138-21. Please verify that your board part number is the same as A5026318A / 1-010-138-21. 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)