Projector Problems

Hey guys got an issue with my projectors, go figure. I bought a new set of HID's and installed them in my truck. Two months later, the passenger side HID will not turn on. The high beams will, because those are a separate bulb, but the regular headlight will not. I checked the power to the bulb with a multimeter and it seems to have power at the connection, but once it starts going through that transformer on it, I can no longer figure out how to test it. Any ideas? Anyone else have these problems with these lights? Thinking about just going back to my old bulbs except I paid for these bulbs.

 

Is it the same problem on both the driver's and passenger side? If not, swap the bulbs or ballasts side to side to try and isolate the problem.