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Raspberry Pi Forum Raspberry Pi 2 Appears dead...
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Related

Raspberry Pi 2 Appears dead...

kas.lewis
kas.lewis over 9 years ago

I just powered up my RPi for the FIRST time and the last... (I hope not). I bought a RPi a bit of time ago in anticipation for a coursera course on the RPi hoping to learn something new unfortunately the first time I went to use it things went sideways.

 

I plugged in everything first, a USB mouse and keyboard and the the HDMI screen (screen was VGA so I used an adapter), so far all good. Next I decided to uses a USB charger for power (5V 550mA) Pi boots but is constantly looping, I figure it must be a constant brown out. I have seen this before on both my hobby systems and what I work with at work. I decided to try a newer USB charger that should allow more current through (5V 1000mA). I was at this point I heard a pop, I quickly unplugged everything and surveyed the damage. No new smells from the Pi but he charger had let out the magic smoke... Opening that up the switcher and transformer where apparently gone.

 

The next step was to plug the screen, mouse and keyboard back in and then retest. I used the first power supply that gave me a constant reboot but no luck nothing happened. I then tried using a USB plug from another PC, in this case the ACT LET lights up briefly and then turns off, if the SD card is removed the ACT LED stays on until power is removed.

 

I have also tried reinstalling the NOOB software on the SD card and this too has produced no better results. If anyone has some information as to what may have happened or how I can get my Pi back up and running it would be very much appreciated. Also if there is some good information on how to power my Pi reliably I would love to hear that too.

 

Thankfully

Kas

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  • clem57
    0 clem57 over 9 years ago

    Just in case the USB was damaged, try to power through GPIO pins with a clean regulated power source that is 4.75 - 5.25 volts and around 750 mA. Check before with a meter.

    Hoping for success,

    Clem

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  • kas.lewis
    0 kas.lewis over 9 years ago in reply to clem57

    Broadcom chip just warms up when I do this, same happens when I use the USB... Was this possibly just a bad board ?

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  • clem57
    0 clem57 over 9 years ago in reply to kas.lewis

    Try a different SD micro card and rebuild image. check that image is Rpi 2 since early ones did not work.

    Clem

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  • clem57
    0 clem57 over 9 years ago in reply to clem57

    Good link to check http://elinux.org/R-Pi_Troubleshooting#Red_power_LED_is_on.2C_green_LED_does_not_flash.2C_nothing_on_display

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  • kas.lewis
    0 kas.lewis over 9 years ago in reply to clem57

    The red LED is not on, only the green one. Also initially the Pi was working also the SD card workd fine in my PC and laptop, but I will give that a go just incase.

     

    Kas

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  • leon_heller
    0 leon_heller over 9 years ago in reply to kas.lewis

    Just buy a new one, they are cheap enough.

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  • clem57
    0 clem57 over 9 years ago in reply to leon_heller

    But here is an opportunity to learn a skill: debugging!image

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  • kas.lewis
    0 kas.lewis over 9 years ago in reply to leon_heller

    Cheap... Shipping is almost as much as the Pi...

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  • kas.lewis
    0 kas.lewis over 9 years ago in reply to clem57

    It appears C1 has been damaged as now there is a resistance of 33.87 Ohms across it instead of like the other caps measured it that appear in the kilo or Mega Ohm range.

     

    Kas

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  • clem57
    0 clem57 over 9 years ago in reply to kas.lewis

    Is it possible to replace? Good work finding the short.

    Clem

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  • kas.lewis
    0 kas.lewis over 9 years ago in reply to clem57

    Hello Clem,

     

    I don't know the value image

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  • kas.lewis
    0 kas.lewis over 9 years ago in reply to clem57

    Hello Clem,

     

    I don't know the value image

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