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Pi3 shows yellow lightning bolt with official power supply

chaozz

I got a Raspberry Pi 3 from TinyDeals to review on my Youtube channel. However, when I run Raspbarian (I tried two different SD cards) or RetroPie I get a yellow lightning bolt in the top right corner. I understand this means "undervoltage".

 

I am using the official Raspberry power supply (I have two, brand new) and tried different phone chargers all with the same result. I have also tried different SD cards and don't have anything plugged into the USB ports.

 

Is my unit broken?

 

PS: I am also a bit disappointed I won't be able to do a review of the Pi, since I won't be able to get warranty on this device (and bought a case and power supply for nothing). image

Parents

  • I wonder if increasing the Over_voltage= setting in the Raspberry Pi 3 Config file would have the effect of increasing the voltage available to these chips, therefor getting rid of the lightning bolt.

     

    I would be very interested to know the relationship between overclock, lightning bolt, and the over_voltage setting.

     

    On a Overclocked Pi, could I keep increasing the over_voltage setting until it disappears?  Or is something fundamentally wrong with my overclock?

     

    Official 2.5A canakit powersupply on a pi3 running conservative Overclock settings in a Nespi Case:

    total_mem=1024
arm_freq=1320
gpu_freq=510
core_freq=510
sdram_freq=500
sdram_schmoo=0x02000020
over_voltage_sdram_p=6
over_voltage_sdram_i=4
over_voltage_sdram_c=4
over_voltage=3
sdram_over_voltage=2
avoid_pwm_pll=1
v3d_freq=510

  • in reply to jasonelmore

    I found out why the yellow lightning bolt kept persisting. I had one of those Unikiller Dual Heatsink fans installed.  The power draw of the two fans was enough to limit kind of overclocking what-so-ever.  Only use single fans people, and low amp ones at that.

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