Please check all plugs and numbers including model. Parts bundle was pulled from a working tv with a cracked screen. Please check your TV for a backlight issue. Use a flashlight and check for dim picture. If you have a dim picture, replacing boards will not fix the issue. Please feel free to ask questions for tips or advice on tv issue and repair. SONY BOARDS PLEASE READ. This update must be sourced by the customer and uploaded to the blank 2 GB complimentary thumb drive that is included in your order. Typically, the firmware update is downloaded from Sony’s website however they have discontinued the downloadable firmware update for several models. It is the customer’s responsibility to ensure the update can be sourced before purchasing the part. We have step-by-step instructions for the update process and an in-house Sony expert who can walk you through every step of the process.