Chosen Solution

Will the logicboard from a G4 1.42 work inside a G4 1.33 machine? Help appreciated

Sorry but no. The 1.42 has different connectors on the logic board so you wont be able to connect your 1.33 airport card, hard drive, trackpad, inverter cable and the reed switch module is also different. Try to find a good working 1.33 logic board instead.