These boards have been removed from mostly new TVS with broken screens and should work if properly installed. SONY XBR49X900F TV SUPPLY BOARD 147471012 / AC21002LF. Please verify that your board part number is the same as 147471012 / AC21002LF. 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)