Vizio 756TXCCB02K037 Main Unit/Input/Signal Board 715G5743-M01-000-005K Vizio Main Board 756TXCCB02K037 for E420i-A1 (715G5743-M01-000-005K 006LP0447861C TXCCB02KO370001. Fits TV Models: E420i-A1 LTYWNRDN E420i-A1 LTYWNRDP