Author: ksdoc
Subject: IFD540/440 Software Release 10.1.0.0
Posted: 28 May 2015 at 11:59am
Edited by ksdoc - 17 hours 59 minutes ago at 12:01pm
Subject: IFD540/440 Software Release 10.1.0.0
Posted: 28 May 2015 at 11:59am
 cajungene wrote:Just started having issues with my 540. I was doing a IPC and planned to show off my box to my CFI. Well the box went into "Coast Mode" and had to re power it twice. Stayed up for about 15 mins then lost GPS again twice more. Lost lock 5 times in a 1.6 hour flight. Not good. Called tech support and will be sending in logs. Looking at the forum this scares me to death since it appears that this is not an uncommon issue. I had a GX-60 that was rock solid for over 2000 hours and replaced it with the 540. Thank god this happened in VFR and not on an LPV approach in the clag at night. Hope that the logs tell the tail. Not sure I can afford all the AOG time that it appears I will have to go thru to get to the bottom of this. For you folks that have had to go thru these issues have you got any suggestions on what the issues might be or what the solution was beside swapping boxes? Gene |
Gene,
Unfortunately, welcome to the club you never wanted to join! My journey has been long, as recorded in another thread.
I finally gave up and swapped back to the G530. Then my installer worked with another plane having the same problem, and came up with the idea to replace the antenna. Seemed to work in his plane, so I flew back up there, replaced with the 540 and got a new antenna. Well, it 'seemed' to work initially, but is now back to the same issue: Will not lock on GPS unless it is repowered at least once.
I would not recommend you swap out for a replacement 540, as I did three times, unless the logs or tech identifies a specific problem with your unit. I would send all the logs to tech support and then keep on them for an answer, did they find anything? They are helpful, but you have to keep engaged with them to get answers. You might try replacing the antenna, but there are no guarantees. Make sure the cable is WAAS approved. Sounds obvious but the other plane above did not have the right cable as he expected.
I have been told that the new update WILL correct the issue, as it is a pretty widespread problem, from what I gather on this site and others. SO, I'm waiting like everyone else for the release, and expect it to correct the problem.
Good luck
Larry
Edited by ksdoc - 17 hours 59 minutes ago at 12:01pm