My Odroid xu4 eulogy (REVIVED NOW!!!!!!!) .... but Handicapped

[proxymo]

Odroid xu4, the dignified Heterogeneous Multi-Processing solution, whose refusal to surrender launched the modern movement of more powerful, more energy-efficient hardware and a smaller form factor computing devices and inspired generations of developers, died last night at his home. It was 4 years old.

Its death was sudden and unexpected and no cause of death is known.

`Odroid xu4 was a true giant of twentieth century technology`

`There are many people who can say its action and conduct change the face of computing`

It remained a beauty until its death: alert, punctilious, elegant and chic. To the end it was unrepentant, defiant and impenetrable. It exuded vitality and optimism, its life has been happy because It had plenty of interesting work to do, It seldom thought about its limitations and will be sadly missed. He is survived by its big brother, the odroid h2

[mad_ady]

How dead is it? Have you poked it with a stick? Tested the PSU? Measured voltage on the 5V line? It may be salvageable still if you didn't burry the poor thing already...

[L67GS]

I'm sorry for your loss.

[powerful owl]

`Odroid xu4 was a true giant of twentieth century technology`

Er...

[proxymo]

@mad_ady
Yeah, I have tried Mouth-to-mouth resuscitation, it did not work, the red light keeps flashing and that's it.
Psu is fine. Emmc is fine. I also tried to boot from sd; Nothing.

[mad_ady]

There are two experimental treatments available, if you're brave enough:
https://wiki.odroid.com/odroid-xu4/trou ... _ic_ncp372
https://wiki.odroid.com/odroid-xu4/trou ... _tps259251

[proxymo]

mad_ady thanks for pointed that out, but the red light flashes, so those procedures did not apply in my case.
Is there any other advanced procedure/s to check what happened?

[odroid]

If the red LED keeps flashing, the PMIC or the SoC on your XU4 board probably damaged.
Your four years old XU4 seems to be in a R.I.P. state.

[proxymo]

Ok thanks, but is there any way to check if the PMIC, the SoC or the ROM is damaged?
Perhaps through jtag or uart?

[odroid]

It is hard to find a damaged component since the system entry power rail keeps turning off and on frequently.
When the red LED keeps flashing, a protection IC near the DC-jack keeps closing/opening the power gate thanks to the over-current protection feature.
It means the CPU or PMIC has an internal short-circuit problem very likely.

[proxymo]

I see, thank you very much.

[proxymo]

Dear Odroid, you so wrong.
Yes there is a risk involved, but as extreme measure it is wonderful.
Just connect your power supply to pin1(+5) and pin2(grn) of CON10 expansion connector, that will bypass the PMIC chip protection (possible fried in cases where the red light flashes constantly)
https://wiki.odroid.com/odroid-xu4/hard ... connectors

[mad_ady]

So just the pmic is dead, not the xu4. See, this is why we keep the boards around for 3 days after death - in case of ressurection.

You can remove and short the pmic as described in the links I showed you for a more permanent fix. Take care not to short the soc though...

[L67GS]

“The reports of my death are greatly exaggerated.”
-Mark Twain

[proxymo]

"You can remove and short the pmic as described in the links I showed you for a more permanent fix. Take care not to short the soc though..."

That is not my case because the red light keep flashing so must be something else.

Also there is no need to solder anything since I found out that you can bypass all the protection by both the connectors pin1 and pin2.

[mad_ady]

Yes, powering via gpio is fine, except the wires are messy and may come loose and cause a short - unless you found a convenient way to secure them... in which case, please share some pictures!
Shorting the pmic brings 5V from the barrel jack into the SOC (just like powering via gpio).

[proxymo]

I see, thanks, but soldering ...., I'm too scared to do that in case I mess things further.

Well I have a semi-messy solution, but you know there are pins on the connectors, so the trick is using a wire that is thick enough to be entered by the pin.

[mad_ady]

In this case I wish long life to your xu4, following its bypass operation!

[proxymo]

Thanks

[proxymo]

I have just find out that usb 3.0 are not working, probably due to the pmci issue.

[odroid]

In that case, the USB hub controller IC or VBUS(5V) related power rail circuit could have an internal short problem.

[proxymo]

Is there any way to check that?