Question My PowerCore / Konnekt / Impact FireWire device is not working correctly under Mac OS. What should I do

Often the problem is something as simple as a bad FireWire cable, but it can also mean a bad enclosure, FireWire port, bad FireWire device power supply, or a logic board problem with the FireWire bus on the Mac in question. Please follow the steps below:
  1. Review the following Knowledge Base article Konnekt / Impact Twin: Troubleshooting in Mac OS X
  2. Review the following AppleCare Knowledge Base document "USB and FireWire Quick Assist"
  3. If you are using FireWire audio devices with either a Power Mac G5 (Late 2005) or iMac G5 (Ambient Light Sensor), see"Power Mac G5 (Late 2005), iMac G5 (Ambient Light Sensor): FireWire bus stops responding after computer restarts with FireWire audio device attached."
  4. If you are using a MacBookPro, see: "MacBook Pro: What to do if bus-powered FireWire devices don't appear in menus or behave correctly." "MacBook Pro: Sleep issues with NitroAV 2-port FireWire 800 card"
  5. Power-on the FireWire drive before starting up or booting your Mac.
  6. Reset PRAM and NVRAM
  7. Reset the power-management chip in your Mac.
  8. Try a different FireWire port. WiebeTech has published FireWire Port Failures in Host Computers and Peripheral Devices, a white paper providing background information and technical analysis concerning the causes of failure for FireWire ports. This may provide additional diagnostic information.
  9. Recent versions of Micromat TechTool® Pro can test the FireWire bus in your computer. This tests the bus not the ports but if the problem is on the FireWire bus on the logic board, the test should find it