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White screen

Discussion in 'Troubleshooting' started by PatrickB, Jul 6, 2017.

  1. PatrickB

    PatrickB New Member

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    Hi,

    From today my C2 doesn't start correctly. The LCD stays white!
    It already append last week but after a switch off and on again it was ok.

    How to fix that?

    Patrick
     
  2. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Try powering it off and back on since that worked before.
    All else fails you will want to contact Robo3D to get this sorted under warranty.
     
  3. PatrickB

    PatrickB New Member

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    Hi Mark,

    On the board the red LED is on and at start a green one blinks only one time.
     
  4. PatrickB

    PatrickB New Member

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    After 10 times LCD is back!
     
    mark tomlinson likes this.
  5. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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  6. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    It is possible that it was in the middle of a firmware update, but usually the screen will warn you of that.
     
  7. KRGraphicsCG

    KRGraphicsCG Member

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    I had a similar issue, except the screen was burned... so I sent my unit back to Amazon and buying a new one
     
  8. Ryan585

    Ryan585 New Member

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    I have the exact same issue. It was fine when I turned it off but when I turned it back on the screen went white and wouldn't start up. I can't start any prints now. Any help would be appreciated. I have tried unplugging and restarting about 20 times now.
     
  9. OutsourcedGuru

    OutsourcedGuru Active Member

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    I will note that the standard image on the Raspberry will likely support a HDMI-to-DVI cable if you happen to have one. I guess I'll have to try this one, to see if I can put a cable on that before bootup and see what displays on a standard monitor. It's likely that this is a no-PIXEL (no desktop) version of Raspbian Jessie (Lite) so at least you'd get a command prompt.

    Version 2: Since it was working fine before, try to ssh or putty to the name of the printer (its "serial number") as in...

    ssh pi@my-c2.local

    If you get a password prompt, use "raspberry". If successful, it might help to...

    tail /var/log/syslog

    It would be nice to know what it's doing and what it's complaining about.

    If however, it doesn't respond to a remote attempt via ssh then it may be a connection somewhere that's gone bad, it's busy attempting to update something (unsure if it tries to automatically do that), or the 5V power line to the Raspi is too low to make the electronics happy.

    It would be interesting to run...

    sudo apt-cache policy unattended-upgrades

    ...to see if Jessie is configured to automatically download and install upgrades. If so, this would explain the odd, seemingly-random white-screen outages upon bootup. If this is what's going on, in theory waiting a full thirty minutes during the white screen may eventually result in a booted-up printer. (See someone's earlier comment that it took ten times to boot before it was happy. He just eventually waited long enough for the sudo apt-get to finish.)

    UPDATE: The image is not configured to do auto-updates.
     
    #9 OutsourcedGuru, Jul 12, 2017
    Last edited: Jul 12, 2017
  10. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    It is probably just a bad LCD, but it could be a failure of the Pi image to boot.
    Those are nice, but really cheap LCDs... Contact Robo support and get with a 2nd-tier support person (that will take scheduling an appointment).

    If you get to the point you want to fix it yourself I can get you the LCD model/make/etc.
     
  11. OutsourcedGuru

    OutsourcedGuru Active Member

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    Was looking into this and it looks like that init script will just grind away on a white screen if there's a slow connection to the server.

    And it looks like someone opened up an issue.
     
    #11 OutsourcedGuru, Sep 11, 2017
    Last edited: Sep 12, 2017
  12. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Hopefully they eventually fix it.
     

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