14
Spent 8 hours chasing a bad ground on a Garmin G5000 install in Orlando last month
Turns out the issue was a tiny bit of paint under a star washer that I missed on the first 3 checks, has anyone else had a phantom ground problem that made them want to toss a multimeter across the hangar?
2 comments
Log in to join the discussion
Log In2 Comments
paige_ellis5913d agoMost Upvoted
Swore I never needed a dental pick until I tried it and it saved my butt on a similar gremlin.
9
charlie_allen13d ago
Had a similar thing on a Kodiak 100 about two years back. Found it after I finally broke down and ran a brand new ground wire from the battery negative post straight to the avionics rack. That bypassed everything else and narrowed it right down. Pulled the original ground stud, found a sliver of clear powder coating hiding under a lock washer. I've started keeping a small dental pick in my tool pouch just for scraping contact surfaces now. It's saved me at least three times since then. What's the worst phantom ground you've chased?
3