I have a GE Refrigerator model ZISS360DMA. It has been acting strangely lately. Temperature is lower than it should be (set to temperature 40 degrees and it will cool it to display temp of 26-30 degrees). Recently multiple lights stopped working at once (upper half of refrigerator side). Manual says they are 12 volt halogen bulbs so I removed them to replace but they actually work fine when connected to 12v source. I checked voltage in socket and found it to be 6 vAC instead of 12. I suspect I need a new control board WR55X11130. Anything I can do to confirm this before spending $200 on a new board?