Puppy Linux Discussion Forum

Urgent!
My Pi4 power supply is failing with 5.25Volts instead of 5.1 Volts being present.
Details are posted here: viewtopic.php?t=5859

First cross posting is not needed nor wanted!
Is PI4 still powering with microUSB ? IF so it would be most likely a bad contact there.
I Don't think your power supply is failing 5,25V is inside tolerances , where did you measure?
Can you measure the voltage and possibly the ripple on the IO header ?
Can you try another cable and or power supply?
( I am powering my PI3 directly to the IO Header to prevent problems with the tiny connectors.)

I have deleted the other post. Reproduced here:

Urgent!
Power supply failing. Production date: P4719 (Week: 47, Year: 2019)

Raspberry Pi 4 power supply voltage at 5.25 Volts while the Pi 4 is up and running.
Top right hand corner of the screen shows a yellow lightning symbol.

Model: KSA-15E-051300HE 100-240V Made In Cambodia

It was working fine till yesterday. I used it from Feb. 2020 onward.

What operating system are you using?

That voltage output is within normal limits.

So, what is making you think you have a voltage issue?
Pi 4 will not properly power up?
What?

Power limits for the Pi 4
https://raspberrypi.stackexchange.com/q ... quirements

If this is an actual official Raspberry power supply.
Load regulation: ±5%
Line regulation: ±2%

So, 5.25V could be regulated voltage based on what is going into it and demand being put on the power supply.

What voltage reading are you getting at the wall outlet?