Circuit Boards

Circuit Boards

The Chamberlain B4603T garage door openers use a DC motor with a full belt rail assembly. This model has LED lights and wifi. Use our parts diagram for reference with all available parts listed below. 

The Chamberlain B4603T garage door openers use a DC motor with a full belt rail assembly. This model has LED lights and wifi. Use our parts diagram for reference with all available parts listed below. 

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  1. LiftMaster 050DCTBMC Logic BoardLiftMaster 050DCTBMC Logic Board
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    LiftMaster 050DCTBMC Logic Board
    SKU: 050DCTB
    Rating:
    100%
    $106.83
    Compatible with LiftMaster garage door opener models:…
  2. LiftMaster 041D8071-4 Travel ModuleLiftMaster 041D8071-4 Travel Module
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    LiftMaster 041D8071-4 Travel Module
    SKU: 041D8071-4
    $44.09
    LiftMaster 041D8071-4 Travel Module. This is a genuine…
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