I use a bent-nose pliers, a large flat-blade screwdriver and a lot of care and patience. You want to push up on the pin while putting exactly the same counterforce on the lower body. Sometimes you still might break one. There's no magic trick that I'm aware of. Don't break anything else in the process. Your local auto parts store may have replacements that will work well enough.
As far as troubleshooting, do you hear a 'click' about 3 seconds after you turn it on? If so, and no display, you probably do have a bad VFD.