Raspberry won't boot

Forums Technical Support for PiScreen Raspberry won't boot

This topic contains 6 replies, has 3 voices, and was last updated by  Matty Lada 5 months, 2 weeks ago.

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  • #7310

    assuncao
    Participant

    Hi guys,

    Currently I have 3 Raspberry Pi 3 with PiScreen each. I’m facing an issue on Raspberry Pi 3 (problem also confirmed on Raspberry Pi 2).

    The Raspberry Pi won’t boot when the PiScreen is connected to. If it is on, when we reboot it by console, also doesn’t come back.

    Sometimes I have to unplug and plug the power connector 10 times until it work. I don’t face this issue when the display is unattached.

    I’ve tried different power supplies. Currently I use a 5V 2amp.

    • This topic was modified 6 months, 3 weeks ago by  assuncao.
    #7312

    Mark Williams
    Keymaster

    Do you have the same problem with all three PiScreens?

    Can you send attached a photo of how you have them connected?

    Mark --OzzMaker.com --

    #7328

    assuncao
    Participant

    Do you have the same problem with all three PiScreens? Yes, with all PiScreens and also with all Raspberry Pi. 

    Can you send attached a photo of how you have them connected? I’m sending them. Please note that in these photos the power cable is soldered directly to the pi, but all my tests have been done isolation it, using the normal pi’s power connector  (micro USB).

    #7331

    Mark Williams
    Keymaster

    If you have only the PiScreen connected and no other hardware…does it work using the normal USB power?

    And when it “doesn’t boot”  does the red Pi power light come on?  is there anything on the TFT of PiScreen?

    One of those images shows the PiScreen working.. how did you get it working?

    Mark --OzzMaker.com --

    #7332

    assuncao
    Participant

    If you have only the PiScreen connected and no other hardware…does it work using the normal USB power? It doesn’t. The problem persists.

    And when it “doesn’t boot”  does the red Pi power light come on?  is there anything on the TFT of PiScreen? Yes, the red light come on, but the green doesn’t. The TFT still always off.

    One of those images shows the PiScreen working.. how did you get it working? Actually we’ve 3 devices working, but if I reboot it does not come back. If it is off, when I power on, it hardly work at the first attempt. I have to keep plugging and unpluggin the power connector many times, of course waiting for some seconds betweens these attempts to see if it is ok. Normally I try about 7 or 10 times until it boot normally.

    • This reply was modified 6 months, 3 weeks ago by  assuncao.
    #7338

    Mark Williams
    Keymaster

    I am at a loss as to why they are not working.  we have solder over 2,000 Piscreens and I have never seen this issue before.

    And we do test every PiScreen, this is why I am surprised you have a problem with all three.

    What happens if you disable the PiScreen driver? E.g. remove or comment out dtoverlay=piscreen2r in /boot/config.txt..   Does the Pi boot while the PiScreen is still  connected?

    Do you have any other hardware or software using GPIOs on the Pi?  The image below shows the pins used by PiScreen2

     

     

     

    Mark --OzzMaker.com --

    #7443

    Matty Lada
    Participant

    Hi….Have you been holding the silver capacitor next to the power connector when plugging / unplugging? This is sensitive and can easily break according to general Pi troubleshooting page but easily replaceable.Have you tried a different charger?Have you unplugged everything then left it for a few hours?

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