My EFIS D100 has developed a power on problem. With external power connected the unit powers up and performs normally. If the external power is turned off the unit continues to operate as normal whilst running on internal battery power. However, if I attempt to power up the unit with external power off it refuses to power up. There is an instantaneous light up of the screen and then it goes blank. If I switch external power back on the unit powers up as normal. It has the symptoms of a flat internal battery but the unit reports the internal battery voltage at 16.2 volts. Any ideas???
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an alternative browser.
You should upgrade or use an alternative browser.
Power On Failure Problem
- Thread starter bgreath
- Start date
PhantomPholly
New Member
- Joined
- Jul 27, 2007
- Messages
- 582
I have noticed a similar phenomenon.
With my D180, if it has been off for a while pushing the leftmost button momentarily, or even holding it, will not bring the unit to life. However, if I turn on system power, then turn system power off and tell the unit to stay on, it stays on - I can then turn it off and back on again, so long as I do not leave it off too long.
In one sense I like it because I don't want to accidentally bump the button getting out and drain the battery - and I don't really ever want to turn it on unless the aircraft has a good battery.
But, I'm thinking that that is not working as designed...
Edit: Using software v5.0
With my D180, if it has been off for a while pushing the leftmost button momentarily, or even holding it, will not bring the unit to life. However, if I turn on system power, then turn system power off and tell the unit to stay on, it stays on - I can then turn it off and back on again, so long as I do not leave it off too long.
In one sense I like it because I don't want to accidentally bump the button getting out and drain the battery - and I don't really ever want to turn it on unless the aircraft has a good battery.
But, I'm thinking that that is not working as designed...
Edit: Using software v5.0
I too, have recently noticed a similar problem. I have turned my D180 (S/W 5.0) on many times in the past using the internal bettery only. I tried just yesterday and it would not turn on with several attempts. I switched on the master and the D180 turned on instantly. I noted the internal battery voltage to be 15.3V. Is this not enough to turn the unit on?
[edit by dynonsupport] Dave - I accidentally mangled your post while trying to quote you. Sorry about that.
- Joined
- Mar 23, 2005
- Messages
- 13,226
My EFIS D100 has developed a power on problem. With external power connected the unit powers up and performs normally. If the external power is turned off the unit continues to operate as normal whilst running on internal battery power. However, if I attempt to power up the unit with external power off it refuses to power up. There is an instantaneous light up of the screen and then it goes blank. If I switch external power back on the unit powers up as normal. It has the symptoms of a flat internal battery but the unit reports the internal battery voltage at 16.2 volts. Any ideas???
Are you running firmware version 5.0? If not, upgrading to that should be your first step.
- Joined
- Mar 23, 2005
- Messages
- 13,226
I have noticed a similar phenomenon.
With my D180, if it has been off for a while pushing the leftmost button momentarily, or even holding it, will not bring the unit to life. However, if I turn on system power, then turn system power off and tell the unit to stay on, it stays on - I can then turn it off and back on again, so long as I do not leave it off too long.
In one sense I like it because I don't want to accidentally bump the button getting out and drain the battery - and I don't really ever want to turn it on unless the aircraft has a good battery.
But, I'm thinking that that is not working as designed...
Edit: Using software v5.0
Not by design. We do have a tiny patch for 5.0 that you can get from support@dynonavionics.com to improve a few battery-related issues. This may or may not help what you're seeing, but if you want to give it a try, shoot support an email.
By the way, do you have keep alive connected? If so, try disconnecting it. That might help.
- Joined
- Mar 23, 2005
- Messages
- 13,226
I too, have recently noticed a similar problem. I have turned my D180 (S/W 5.0) on many times in the past using the internal bettery only. I tried just yesterday and it would not turn on with several attempts. I switched on the master and the D180 turned on instantly. I noted the internal battery voltage to be 15.3V. Is this not enough to turn the unit on?
The left button should kick it on. The patch suggestion from above advice applies to you to. Do you have keep alive connected? If so, disconnecting may help as well.
- Joined
- Mar 23, 2005
- Messages
- 13,226
Another update on the "not powering up with the left button-push" thing. It turns out there are a some batteries out there that suffer from this issue. For the technical-minded, the inrush current required by the instrument slightly exceeds the safety circuit's cutoff, so the battery basically gets cut-off from the system.
If you don't feel like pulling your system out of the panel to get at the battery, it won't cause any adverse behavior. If it's really bothering you though, give tech support a call at 425-402-0433 and we can go through the RMA process to get you fixed. You'll need to send in your battery though.
If you don't feel like pulling your system out of the panel to get at the battery, it won't cause any adverse behavior. If it's really bothering you though, give tech support a call at 425-402-0433 and we can go through the RMA process to get you fixed. You'll need to send in your battery though.
PhantomPholly
New Member
- Joined
- Jul 27, 2007
- Messages
- 582
I have noticed a similar phenomenon.
With my D180, if it has been off for a while pushing the leftmost button momentarily, or even holding it, will not bring the unit to life. However, if I turn on system power, then turn system power off and tell the unit to stay on, it stays on - I can then turn it off and back on again, so long as I do not leave it off too long.
In one sense I like it because I don't want to accidentally bump the button getting out and drain the battery - and I don't really ever want to turn it on unless the aircraft has a good battery.
But, I'm thinking that that is not working as designed...
Edit: Using software v5.0
Not by design. We do have a tiny patch for 5.0 that you can get from support@dynonavionics.com to improve a few battery-related issues. This may or may not help what you're seeing, but if you want to give it a try, shoot support an email.
By the way, do you have keep alive connected? If so, try disconnecting it. That might help.
No, no keep-alive wired.
I'll skip the patch, thanks. First thing I do is always turn on master power (it insures the hydraulic pump cycles, guaranteeing the gear is positively locked down and that the pump is working). That turns on the EFIS, and after that I have no issue.