GET A DMM! You can't solve this issue without it.
First, check the fuse that powers the divertor. Data east has really bad fuse clips. You may have a poor connection at the fuse.
Second, check for power at the coil. Using your DMM. Attach the black to the grounding strip of the cabinet and then using the red lead tough either lugs of the coil in question. You should get a reading of 25-80VDC. If you have power to the coil move on to step 4.
Third, if no power at coil then you need to trace wire (brown/yellow) from coil all the way up stream to find the break in the connection. If you find no broken connection all the way to the PCB - CHECK YOUR FUSE and FUSE CONNECTOR.
Fourth, if you have power to the coil, but it doesnt fire in test mode then the chances are your Q27 for the divertor is shot. TIP122 needs to be replaced with a TIP102. You can test the transistor with your multimeter too. TIP122/102: Put the black lead of the DMM on the center lead or on the metal tab of the transistor. Put the red lead of the DMM on each of the two outside legs of the transistor one at a time. The DMM should show a reading of .4 to .6 volts. Any other value, and the transistor is bad and will need to be replaced.
I always replace my pre-driver while im at it. 2N4401.
Check your resistance on your coil too. Anything less than 3ohms is bad.