MrJere

If you've got the ability to try a multimeter (or invest in getting one), I've found it to help me massively at finding the faults with my electronic blasters.

In this instance, Open the Vulcan up, pop the batteries in and test the metal contacts on the battery box using the probes. This will give you the ability to check that your battery box is actually providing power to the rest of the blaster.

From here, its just trial and error, following the circuit round with the probes to attempt to find the broken section. Make sure to check all the switches and metal contacts on the way round. Be paitent however, it is a long and arduous process on some of the larger blasters.

Edit: Spelling, derp.

I've currently had no issues with the Hailfire mission kit (6 round elite mag) and my Retaliator. I was under the impression that the mag casing on the elite was exactly the same as the standard mags (barring the translucent orange plastic side)