Hi Mike
The easiest way is to unplug the igniter (one at a time), turn the oven on and check for 120V coming to the igniter. If you see a proper power then the igniter has to be replaced.
If you do not see a proper power then check the wires and, if there is nothing wrong, replace the control board.
- The part number for the bake and the broil igniters
AP205873
- The part number for the control board (aka a clock)
AP4309072
- Here are the break down diagrams for the Magic Chef range
Model CGR3740ADL
Good luck.
Gene.