How to check if my power supply is underperforming?
#1
Hey guys, I'm having this issue with my external hard drive disconnecting and I'm suspecting my power supply is underperforming.

It's not the official power supply, it's a generic one I found on a store nerby. Except from this suspicion regarding the external HDD, it never showed any sign of problem.

In the Raspberry Pi there's the lightning symbol that shows the undervoltage situation, what about the Rock64? Is there any log or diagnostic tool to track and see if the power supply is underperforming, or if the USB 3 port is not outputing 5V?
Thanks.
  Reply
#2
I checked the GPIO pins with a multimeter while a USB2.0 HDD was connected to the USB3.0 port.
I'm getting sustained 4,4 to 4,6V in the 5V pin.
Should I conclude that the power supply is underperforming?

Can someone recommend a legit power supply from Aliexpress/Gearbest/Banggood (or somewhere that ships to South America at a reasonable price)?
  Reply
#3
Hello,

what are you Power Supply says, how mutch Ampere it can deliver?
The official is 5V - 3A
  Reply
#4
(06-02-2019, 07:37 AM)gigagames Wrote: Hello,

what are you Power Supply says, how mutch Ampere it can deliver?
The official is 5V - 3A

The power supply says it delivers 5V3A, but it looks like that's not true.
Under very little load it's below 5V.

I ordered a USB Voltage meter to check the amperage anyways.
  Reply


Possibly Related Threads...
Thread Author Replies Views Last Post
  power connector type please AlexS 1 170 08-31-2019, 08:27 AM
Last Post: tllim
  Using a stronger power supply myn4m3 1 193 06-23-2019, 05:01 PM
Last Post: Rocklobster
  USB3 enough to power 2,5 external HDD? va88 11 583 06-06-2019, 03:40 PM
Last Post: va88
  "ROCK 64 STEREO AUDIO DAC ADD-ON BOARD", Is it okay if I turn on the power ? t4_4t 4 593 01-09-2019, 01:02 AM
Last Post: t4_4t
  Boot on power-up vicencb 1 282 11-26-2018, 11:45 PM
Last Post: evilbunny
  USB DVB-C sticks to check AlexS 0 223 02-26-2018, 02:38 AM
Last Post: AlexS
  Power Via usb Nelly 2 1,070 02-24-2018, 01:51 AM
Last Post: Nelly
  Looking for advice on power supply for a rack of 4+ Rock64's fwo19 4 1,480 02-10-2018, 04:23 AM
Last Post: Gary_Cole
  Secondary power input for Rock64 through pi2 Bus nmhart322 6 1,181 12-18-2017, 01:56 AM
Last Post: Lamensis
  Extending power / reset button nmhart322 5 1,231 12-16-2017, 07:57 PM
Last Post: dkryder

Forum Jump:


Users browsing this thread: 1 Guest(s)