Part number can be found on a sticker.
Vizio 56.04219.641G (PA-3231-01WN-LF) Power Supply
Part Number: 56.04219.641G
Board Number: PA-3231-01WN-LF
Part Type: Power Supply
Notes: ShopJimmy recommends ordering by part number whenever possible. Often times there are TV models that use more than one set of parts and/or panels.
Manufacturer Part Number 1: Vizio 56.04219.641G
Manufacturer Part Number 2: Vizio 56.04219.641
Known Models
D650I-B2 LWJARPAQ
E650i-A2 LWJAOZBP,LWJAOZCQ
E650I-B2 LWJARMAQ