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Help! CrystalSky stopped working, won't turn on
2533 11 2017-8-21
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Twirlip
Second Officer
Flight distance : 2461545 ft
United States
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My 5.5" CrystalSky appears to be a brick, suddenly, and I have no idea why.  Here's my recent timeline:

- Got it about a month ago, have flown dozens of flights over 9.5 hours of flight time, never had any problem with it.
- Yesterday, I turned it on, and it prompted me to update the device (I was at home with WiFi turned on).  So I did.  (No idea if this is relevant or not.)
- Today I flew the drone (Mavic Pro).  Just a few minutes, perfectly ordinary flight, nothing unusual about it, CrystalSky worked normally.
- After landing, I did my usual shutdown sequence:  1. Power down Mavic.  2. Power down remote control. 3. Push the power button on the CS.  4. When the CS then turned itself back on again a couple of seconds later (as it always does, I have no idea why), I pushed the power button a second time, and it turned off and stayed off.  All as usual.
- A few minutes later, I wanted to look at something on the CS, so I pushed the power button... and nothing happens.  It's totally dead.  The battery has a nearly full charge.

I tried disconnecting the CS from the battery for a few minutes, then re-connecting.  Still can't do anything.  A brief press of the power button (i.e. the way one does when the device is "sleeping" and not actually fully powered off) does nothing.  A long press of the power button (i.e. the way you do to turn it on when it's completely powered off) also does nothing.

As far as I can tell, the CrystalSky is now a brick.  It's completely unusable, I have no idea what to do.

Has anyone experienced anything like this?  Any idea at all what I can do?

2017-8-21
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StianGel
Captain
Flight distance : 686654 ft
Norway
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This does not sound good. Any signs of life if you have it connected to the remote, and then powering up the remote so that the CS should normally power on.
2017-8-21
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Twirlip
Second Officer
Flight distance : 2461545 ft
United States
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StianGel Posted at 2017-8-21 11:08
This does not sound good. Any signs of life if you have it connected to the remote, and then powering up the remote so that the CS should normally power on.

Nope.  Same deal.

Not that I would have expected anything to happen.  It's pretty clear that the CrystalSky is completely dead, no power whatsoever.  So plugging anything into the USB port-- whether the remote, or anything else-- wouldn't have any effect, since the CS has no way of even knowing anything's plugged in, because it has to have power in order to be able to read the USB port.

[EDIT]  Okay, it's a few hours later-- back up and running.  I've noticed before that the CS has a "window" of a certain period of time that it maintains its state while the battery is disconnected.  That is, if I disconnect the battery for just a few minutes, the device doesn't "shut down" and need to do a cold boot, but if it's overnight, then it does.  Not sure exactly how long it is, but it's been 3 hours disconnected from the battery, which appears to be long enough.  Hooking up the battery just now and doing a long-press on the power button, the CrystalSky went through its usual cold-boot routine.

So, whatever happened, it was something that horked the CrystalSky to the point that it needed to do a cold boot, and apparently the only way I could get it to do that was to disconnect the battery for a few hours.  Good to know for future reference.  (I wish there were a physical button somewhere, perhaps recessed so you have to press it with a toothpick or something, that would force it to do a cold boot.  Would have saved me a few hours of fussing and worrying.)
2017-8-21
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rparge
First Officer
Flight distance : 173852 ft
United States
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I have, I had to hold the power button down for a good 60 seconds, and it came back to life.
2017-8-21
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Twirlip
Second Officer
Flight distance : 2461545 ft
United States
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rparge Posted at 2017-8-21 15:47
I have, I had to hold the power button down for a good 60 seconds, and it came back to life.

Oh, really?  I knew that "press the button" and "press the button for a few seconds" were things, but did not realize that "press the button for a full, solid minute" was a thing.  

Great to know, thanks for the tip!
2017-8-22
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rparge
First Officer
Flight distance : 173852 ft
United States
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Twirlip Posted at 2017-8-22 07:00
Oh, really?  I knew that "press the button" and "press the button for a few seconds" were things, but did not realize that "press the button for a full, solid minute" was a thing.  

Great to know, thanks for the tip!

Yeah, it's an old Android trick. Since CS is Android, I gave it a whirl, and what do you know! It came back to life!
2017-8-22
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Forestjim
Captain
Flight distance : 4545135 ft
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Australia
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Twirlip Posted at 2017-8-21 11:20
Nope.  Same deal.

Not that I would have expected anything to happen.  It's pretty clear that the CrystalSky is completely dead, no power whatsoever.  So plugging anything into the USB port-- whether the remote, or anything else-- wouldn't have any effect, since the CS has no way of even knowing anything's plugged in, because it has to have power in order to be able to read the USB port.

I have had similar wows. Screen kept going to sleep and won't wake up until cold next day.
I sent it back to DJI twice ( they couldn't replicate) and they advised me that if it happens again take a video.
Well it happened again. Took video and emailed it to support.
They are sending me a new one and it's on it way now.
2017-8-23
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DJI Mindy
Administrator
Flight distance : 7 ft
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Twirlip, sorry for the unfortunate experience with our product, this issue has been reported to engineers for analysis, I will come back to you once I hear from them, we apologize for the trouble caused.
2017-8-26
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AlainBelgium
lvl.1
Indonesia
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The same happened to me today after two succesful flights. The crystalsky simply didn't turn on anymore. It sucks when  you are at a great location when travelling in Bali. Then in the evening it simply switched on again like nothing happened. Did it overheat?
2018-6-2
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Vegasdad
lvl.2
Flight distance : 3471283 ft
United States
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DJI Mindy Posted at 2017-8-26 00:34
Twirlip, sorry for the unfortunate experience with our product, this issue has been reported to engineers for analysis, I will come back to you once I hear from them, we apologize for the trouble caused.

used my CS on a job yesterday and today it won’t turn on unless it on the RC. Tried to start like what was said above and didn’t work.  Any idea?
1-11 19:09
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Sky Donkey
First Officer
Flight distance : 258484 ft
United Kingdom
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Forestjim Posted at 2017-8-23 18:09
I have had similar wows. Screen kept going to sleep and won't wake up until cold next day.
I sent it back to DJI twice ( they couldn't replicate) and they advised me that if it happens again take a video.
Well it happened again. Took video and emailed it to support.

When you say there sending you a new one, do you mean a refurbished or repaired unit?  Didnt think they made Crystalsky anymore.. They certainly don't support it …
1-12 14:45
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Forestjim
Captain
Flight distance : 4545135 ft
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Australia
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Sky Donkey Posted at 1-12 14:45
When you say there sending you a new one, do you mean a refurbished or repaired unit?  Didnt think they made Crystalsky anymore.. They certainly don't support it …

The date of my post was back in 2017.
I have 2 Crystalskys. They have been rock solid for the past 2 - 3 years.
They are an excellent monitor but I very ordinary device. For the problems, you see in these forums.
I also have a Smart Controller..... Now that is a great piece of gear.
1-12 14:54
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