Odroid N2+ redlight only nothning else

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vasu4m
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Odroid N2+ redlight only nothning else

Post by vasu4m »

Hi,
My Odroid n2+ stopped working from 2 days and there is only red light. below are the trouble shootings i have done.
1. switched off the N2+ and power cycled no video (LG C9 55 inch 4K TV and LG 26 inch TV and Aoc 29 inch 2560X1080 monitor). tested on all three displays.
2. SD card Coreelec image
HDMI connected
LAN connected
Powered on.. no display,LAN no light
GPIO pin 1 - 2.06V
pin 2 - 5.13V
pin 4 - 5.12V
3. SD card android image
HDMI connected
LAN connected
Powered on ... no display, LAN no light
GPIO pin 1 - 2.13V
pin 2 - 5.12V
pin 4 - 5.10V
4. SD card Linux image
HDMI connected
LAN connected
Powered on.. no display, LAN no light
GPIO pin 1 - 2.04V
pin 2 - 5.13V
pin 4 - 5.14V
The above tests are done on LG TV First and they are done on other displays as well. The voltage reading are almost similar in every test.
the memory cards used are Samsung 32 GB EVO+ (been using this for COREELEC) and Samsung 64 GB evo+(been using this card for android) and 8GB Samsung SD card for testing purpose (pics attached)
Please help what has to be done.
The above images are downloaded from HARD KERNEL web site https://wiki.odroid.com/getting_started ... _providing.
The OS images are written to every SD card using BELENA ETCHER.
Regards
Attachments
Odroid voltage check PIN4.jpg
Odroid voltage check PIN4.jpg (140.92 KiB) Viewed 318 times
Odroid voltage check PIN2.jpg
Odroid voltage check PIN2.jpg (151.34 KiB) Viewed 318 times
Odroid voltage check PIN1.jpg
Odroid voltage check PIN1.jpg (148.88 KiB) Viewed 318 times
odroid 1 (5).jpg
odroid 1 (5).jpg (102.19 KiB) Viewed 318 times
odroid 1 (1).jpg
odroid 1 (1).jpg (103.42 KiB) Viewed 318 times
1 (4).jpg
1 (4).jpg (150.13 KiB) Viewed 318 times
1 (1).jpg
1 (1).jpg (139.3 KiB) Viewed 318 times

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odroid
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Re: Odroid N2+ redlight only nothning else

Post by odroid »

Pin #1 on the 40pin GPIO header must be near 3.3Volt not 2.0Volt.
I think 3.3Volt regulator circuitry seemed to be damaged by unknown shocks probably.
If you can read schematics, trace 3.3Volt path.
https://dn.odroid.com/S922X/ODROID-N2/S ... 200406.pdf

When/where did you buy your N2+ board?

vasu4m
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Re: Odroid N2+ redlight only nothning else

Post by vasu4m »

hi,
Thanks for the reply. I am sorry to say i cant read the schematics i am in medical profession.
I read through the posts and mostly the questions asked by admin seemed to be around the pin voltage so i taught
posting the details would help. I am attaching closeup shots front and back if that can help.
I am from INDIA and i bought the ODROID N2+ from fabtolab ( https://www.fabtolab.com/hardkernel-odr ... id%20n2%2B ).
They are the dealers in INDIA.
regards
Attachments
N2+closeup back.jpg
N2+closeup back.jpg (303.3 KiB) Viewed 309 times
N2+ closeup Front.jpg
N2+ closeup Front.jpg (246.52 KiB) Viewed 309 times

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Re: Odroid N2+ redlight only nothning else

Post by odroid »

Thank you for the macro pictures. But, I couldn't find any burned ICs on the PCB. Sorry about that.
As page 14 in the schematics, system 3.3Volt is generated by U10 NB680GD IC.
Measure the input and output voltage of the U10 if you can.

Anyway, contact your local distributor first to ask any possible RMA or replacement.

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Re: Odroid N2+ redlight only nothning else

Post by vasu4m »

Hi,
Thanks for the reply. I will measure the voltage and get back to you. The product was purchased on 03 July 2021 and got it delivered by 13 Aug 2021. As RMA or replacement is concerned I was told to raise the concerned here in the forum and I will be guided about it.
Thanks
Regards

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Re: Odroid N2+ redlight only nothning else

Post by vasu4m »

Hi,
The voltage is showing 12.2V at U10 NB680GD IC (pic attached).
The fabtolab also responded to the mail they are ready to replace if the manufacture is ready to replace (screenshot attached).
Please guide what to do.
Regards
Attachments
U10 NB680GD IC voltage.jpg
U10 NB680GD IC voltage.jpg (212.68 KiB) Viewed 279 times
Screenshot_fabtolab.jpg
Screenshot_fabtolab.jpg (106.01 KiB) Viewed 279 times

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Re: Odroid N2+ redlight only nothning else

Post by odroid »

You measured the input voltage.
Please measure output voltage via C140 or C139.
If it is still around 2.0V instead of 3.3V, you need to replace the board.

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Re: Odroid N2+ redlight only nothning else

Post by vasu4m »

hi,
Both C140 and C139 show no voltage i think they are dead.
Please accept for a replacement and direct the same to fabtolab.com. They have already contacted you.
Thank you
Regards
Attachments
c140.jpg
c140.jpg (162.31 KiB) Viewed 254 times
C139.jpg
C139.jpg (168.95 KiB) Viewed 254 times

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Re: Odroid N2+ redlight only nothning else

Post by odroid »

Your board seems to have a hardware issue with 3.3volt power rails.
Your distributor should replace your board first and then they send us the damaged board for RMA.
Send a link of this thread to the distributor.

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Re: Odroid N2+ redlight only nothning else

Post by vasu4m »

Hi,
Thanks for your support, I mailed to the distributor and was told that they will inquire about it with the company and get back to me.
I will update any developments in this regard.
thanks
regards
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rockla
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Re: Odroid N2+ redlight only nothning else

Post by rockla »

Vasu what happened I'm also about to purchase from fabtolab want to see whether they offer risk free replacement

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