Mallory 685 Ignition Box Problem
 

The box has worked fine for a few months, but just the other day the car wouldn't start. I had just had it started not 3 minutes before...and had not been WOT for a while. I put on the bypass plug and the car started fine.

The box will power up fine, but the only menus it will let you go to are 1. Main RPML or 7. Tach Test. The tach test value is at 3.0...but I'm not sure what it's for.