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Red Xs |
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MarkZ 
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Joined: 05 Sep 2015 Location: 0TX0 Status: Offline Points: 172 |
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 Topic: Red XsPosted: 24 Jun 2016 at 9:35am |
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I got red Xs on the left data blocks after a refueling stop rendering my 540 a paperweight, or so I thought. Upon taxi it came back to life making me think a bad connection. I wish I would have taken a picture and will do so if it happens again. The only anomaly was communicating with the engine monitor for the leg but all seems well at this point. I'm really thrilled with my decision to go with this 540 and look forward to getting more time behind it.
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oskrypuch
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Joined: 09 Nov 2012 Location: CYFD Status: Offline Points: 3058 |
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Posted: 24 Jun 2016 at 11:10am |
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You can still donwload all the logs, and send them to technical support. They should be able to figure out what happened. Very simple procedure to do -- and if you have a repairable issue, you want to get that fixed. Give them a call the toll free number. If this is a brand new, it won't cost you anything. * Orest
Edited by oskrypuch - 24 Jun 2016 at 11:11am |
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AviSimpson
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Posted: 27 Jun 2016 at 9:07am |
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Their email address is techsupp@avidyne.com or 888-723-7592. Having the logs handy will help, the steps to retrieve them are in the pilots guide. |
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Simpson Bennett
Avidyne Corporation Product Manager |
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MarkZ
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Posted: 27 Jun 2016 at 9:18am |
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I'll do that. I'm away from the plane for a bit but will prioritize that as I would like to have an understanding of what was going on. Thanks! Look forward to a visit at OSH.
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Apiaguy
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Joined: 05 Jan 2016 Location: Usa Status: Offline Points: 35 |
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Posted: 28 Jun 2016 at 10:39am |
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when you say left data blocks do you mean comm and nav frequencies? If so it is an overvoltage condition. I have had the same issue... the old generators in the airplane tend to build voltage over time in flight and as the battery becomes fully charged the voltage will hit 30 volts and there goes the 540... the 530 wasn't as sensitive... Manual says it is supposed to be 31 volts but like clockwork when battery trips 30 you hear the cycling and red x's pop up over comm's. Turn down the voltage!
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MarkZ
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Posted: 28 Jun 2016 at 2:37pm |
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That's plausible but I've a new Plane Power VR and I'm right down the street from them. I'll ask if I can reduce the output. What you describe is what I saw. I still need to pull the logs and have them studied. Thanks for the insight.
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ddgates
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Joined: 12 Aug 2011 Location: Deer Valley Status: Offline Points: 1100 |
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Posted: 28 Jun 2016 at 5:58pm |
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The VR is adjustable, it is a part of the setup. Better than tweaking in the blind, plug a voltmeter into the lighter socket, start the engine, run up to about 1700 RPM on the ground, and see what you have,
-or- Use the voltage meter part of your JPI -or- If you have Aspens they will read your voltage as well. Don't adjust your VR output without knowing the voltages directly; actually any VR tweak is supposed to be o be done by an A&P. Edited by ddgates - 28 Jun 2016 at 6:01pm |
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David Gates
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MarkZ
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Posted: 28 Jun 2016 at 10:06pm |
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I just pulled the logs from my 930 and the voltage when I would have turned on the 540 would have been no more than 27.5v. Looking over a 3.5 hr flight my voltage never got up more than 28.1v for 34 minutes then drops back 27.9v. I don't think that high voltage is the issue. I am anxious to pull the 540s logs. This is good stuff!
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MarkZ
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Posted: 28 Jun 2016 at 10:09pm |
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Here's what I'm looking at:
https://www.flickr.com/gp/125356136@N02/CNQ808 |
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ddgates
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Posted: 29 Jun 2016 at 9:52am |
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Then don't touch your VR.
Are you getting red X on items that require data feeds from your JPI or an EFIS? What were the data blocks which were X'ed out? I've seen this when there is temporary interruption in the ARINC 429 heading feed; maybe something similar. Edited by ddgates - 29 Jun 2016 at 9:57am |
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David Gates
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MarkZ
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Posted: 29 Jun 2016 at 2:27pm |
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The NAV and COM data blocks were Xd out. I'll see if I can get th logs this week. Nothing else was affected to my knowledge then everything cleared up except the fuel data info between the 540 and the 930. Next flight had no issues at all. I'm running FastStack Approach Hub and Tim's harnesses behind my panel and everything just seems to work. I had a heading bug issue with the autopilot but it was an Aspen setting that I had wrong and now I think I'm good to go. You have to love this data logging!!
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ddgates
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Posted: 29 Jun 2016 at 3:02pm |
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If it was only those boxes, it is a IFD540 issue, no doubt.
I'd get an RMA and send the box back to Avidyne. |
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David Gates
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Apiaguy
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Posted: 01 Jul 2016 at 3:34am |
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Ill say it again.... If it was nav and com that was x'd out it is the voltage.
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ddgates
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Posted: 01 Jul 2016 at 2:27pm |
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Not necessarily. If understand correctly, both nav and comm are software defined radios.
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David Gates
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DavidBunin
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Posted: 02 Jul 2016 at 8:10pm |
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Except that we have evidence that there was no problem with voltage. |
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ddgates
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Posted: 03 Jul 2016 at 9:27am |
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+1
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David Gates
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Apiaguy
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Posted: 05 Jul 2016 at 12:36pm |
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Im not convinced your voltage date from your engine monitor proves it isnt a problem... But hey, just my opinion having delt with this problem
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AviJake
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Posted: 10 Jul 2016 at 10:23am |
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Voltage data in the data logs is very coarse from a timing perspective and could easily mask a real issue.
Your VHF radio blocks when Red-X because either the VHF failed (highly unlikely and would have been accompanied by CAS messages telling you that), or that the input voltage on those pins dropped off/below minimums. This is the much more likely cause. Now the question is to determine why that happened. In my test airplane, I used to have a flaky original/antique 530 tray for one of my IFDs and would periodically have this happen until I had the tray replaced with a more reliable connection. |
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Steve Jacobson
sjacobson@avidyne.com |
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MarkZ
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Posted: 15 Jul 2016 at 8:12pm |
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I just got back from downloading my data logs and will follow up probably Monday. I can assure you that I don't have one of those cheesy "G" trays. :-D
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MarkZ
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Posted: 04 Oct 2016 at 5:39pm |
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Just to follow up, I couldn't be more thrilled with Avidyne's customer service. After some time and transferring data logs, I received a replacement IFD 540. TJ Sutton patiently assisted me through this ordeal and even helped me get all the settings on my 340 so it would talk ADSB. I received a replacement IFD 540 box at my door this morning so I walked out to my hangar, recorded the settings, set it up, and I'm now up and running like new. I hope to fly by next week and road test it.
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ac11
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Posted: 05 Oct 2016 at 12:29am |
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Thanks for the follow up. It really helps. There are a lot of threads without a response/resolution on this board. Thanks for providing closure.
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kdwalker
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Posted: 05 Oct 2016 at 12:52pm |
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+1 Been chasing this down for many months now and still no resolution. It's not the voltage nor the CB. What's frustrating is that NO other avionics are affected which would likely be the case if it was voltage. Edited by kdwalker - 05 Oct 2016 at 1:11pm |
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kdwalker
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Posted: 05 Oct 2016 at 1:07pm |
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Apiaguy
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Posted: 05 Oct 2016 at 1:48pm |
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More testing required...
The other avionics aren't as voltage sensitive so you won't see it in them. Next time it happens, turn off the alternator or generator so everything is running on battery voltage only. Again, I see this happen all the time on the 540 with high voltage.
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AzAv8r
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Posted: 05 Oct 2016 at 10:01pm |
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Previously I posted about a corroded connector at the battery breaker on the bus causing the voltage to drop when the gear pump came on, and I noticed it via the JPI resetting. There was another time not long after we bought the plane where the JPI reported excess bus voltage intermittently (maybe 16V?). That turned out to be a loose connector on the alternator causing the regulator to drive the voltage too high. Fortunately we didn't fry anything.
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kdwalker
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Posted: 04 Dec 2016 at 8:58pm |
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Support swapped out the unit and I no longer (so far) have the VHF failures.
-Kevin
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oskrypuch wrote: