RPI4 wont boot red led blinking

[darkrv]

Hello my 5 month rpi 4 doesnt boot anymore, only red light is blinking, i tried with 2 differents official PSU: same result, is my Pi4 Dead???
There is no green light, tried with and without sd card
See video below:

https://photos.app.goo.gl/KhjPDqf8pA25uT9j9

Thanks for help!

[B.Goode]

Hello my 5 month rpi 4 doesnt boot anymore, only red light is blinking, i tried with 2 differents official PSU: same result, is my Pi4 Dead???
There is no green light, tried with and without sd card
See video below:

https://photos.app.goo.gl/KhjPDqf8pA25uT9j9

Thanks for help!

There is a summary of all the knowledge accumulated from these forums during the past 8 years about difficulties getting an RPi to boot, see - STICKY: Is your Pi not booting? (The Boot Problems Sticky) - viewtopic.php?f=28&t=58151

[darkrv]

Hello i already checked i didnt find my case but according to online documentation, red blinking means problem with Power supply but i bought another official PSU and still get the red flashing problem.
What else can cause this??

Thanks

[drgeoff]

Try removing/unplugging that fan thing. I suspect it is faulty and overloading your PSUs.

[darkrv]

Hello Thanks but still same blinking.
Flashes are regular and wont become constant, thats really weird
I tried with phone charger (5v 2A) it does not blink anymore (w/ or without fan) but no green light at boot and wont read my sd card.
The 2 official chargers (5V 3A) both give red flashing (w/ or without fan) , its really really strange!!

[drgeoff]

Hello Thanks but still same blinking.
Flashes are regular and wont become constant, thats really weird
I tried with phone charger (5v 2A) it does not blink anymore but no green light at boot and wont read my sd card.
The 2 official chargers (5V 3A) give red flashing, its really really strange!!

How can it be "still same blinking"? The blinks in your video are from the fan which should be unplugged.

[darkrv]

Hello when i remove the fan the red light from PI4 still blinks, i can do another vid but its the same

Thanks!!!

[drgeoff]

If with 2 official PSUs (one at a time!), no micro-SD card inserted, nothing in the USB ports and nothing connected to the GPIO header, the red LED is flashing I'd say you now have a hardware fault on the RPi board.

[darkrv]

Ofc i use official PSU one at a time lol i think there is only one USB C port anyway
Yeah i think its a faulty board...
Thx anyway

[klricks]

Ofc i use official PSU one at a time lol i think there is only one USB C port anyway
Yeah i think its a faulty board...
Thx anyway

Yes likely there is a fault on the board.
Most power supplies have short circuit or overload protection circuits which will shut down the power output when an overload is detected.
The power supply will then try to restart itself, but with the overload still present, the supply will then shut down again.
This power cycling is the reason the power LED flashes.
You can test this by measuring the 5V with a meter.
Does or did anything on the board get really hot quickly?

[darkrv]

Hello thx for your help but i dont know how to measure with a meter

[fabio.htr]

I have the same problem. Rpi4 4GB, with original PSU.
Already tested the PSU, SD Card with a good rpi4, and didnt find any problens. Cleaned the rpi4 board with isopropyl alcohol with no success.

The red led is always flashing and the green ACT led never turned on.

I didnt use/short the GPIO pins

Already followed the instructions to update EEPROM but that didnt work

Read this old post .Maybe i will try shorting GLOBAL_EN to GND and releasing it but i dont know how to do this.
https://www.raspberrypi.org/forums/view ... t#p1606128

Maybe its a hardware faulty like a dislodged resistor as the Raspiberry Pi engineer said in the post above. I didn't try this because the photo of the resistor is no longer online

Someone can help ?