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Ron's Web Site
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Date: 5-13-2011
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Number of Hours: 50.00
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Manual Reference:
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Brief Description: Avionics Working (Finally)
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Getting the avionics to work correctly has been problematic. Initially, I had trouble getting the ARINC to work. I sent the EFIS units back to AFS, and although the units checked out ok on the computer, when they were hooked up to an actual 480 and its ARINC, the ARINC didn't work. I upgraded to the Synthetic Vision, which involved replacing the motherboards, and Trevor at AFS checked them on the computer and with a 480 & ARINC, and they now worked. I also sent the 480 to Garmin to see if it was working correctly (they said they'd send it back for only freight if there was nothing wrong with it). Plugged them into the airplane after I got the 480 back (no defects except $850 worth of service bulletins, which is their flat fee), the ARINC worked until I turned the GTX-327 transponder on, at which point all the 480 serial ports got fried. Off to Garmin both boxes went. Long story short, the transponder was sent back 3 times and the 480 twice more. It turns out the transponder RS-232 #2 was putting out buss voltage to the 480 and which was burning up its serial ports, and it turns out Garmin doesn't routinely check for that. I only discovered it by breadboarding the transponder connector and connecting each pin out one at a time till I blew a fuse (and the 480) one last time. A multimeter confirmed 13 volts on RS-232 #2 vs .01 volts on RS-232 #1. A bunch of phone calls later, Garmin AT repaired the 480 which was blown by the 327 transponder previously fixed by Garmin under repair warranty ($650 flat fee for the transponder), and everything is working. Along the way, I must have rung the wiring about a dozen times, looking for a wiring error. Kudos to Trevor at AFS and Kelley Babin, BTW, for all their help.
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Everything working.
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