HC2 dead?

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d4ve
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HC2 dead?

Unread post by d4ve » Thu Oct 03, 2019 11:44 am

I've got three HC2s that have been running happily for around a year. I recently moved, and one of them no longer powers on, no LEDs, nothing. I tried swapping the power supplies around (12V, 2A) form the other two units, and the dead unit still wouldn't boot. I've also tried swapping the SD cards from the working units, and that doesn't seem to make a difference either. I also have the USB-UART serial adapter, and I don't see any signs of booting when I connect that (it works fine, and I get the terminal console on the other two HC2s).

Any suggestions for things to try? The board looks fine, and I don't think there is any physical damage. Or do I have a totally dead unit? :(

Thanks

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mad_ady
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Re: HC2 dead?

Unread post by mad_ady » Thu Oct 03, 2019 1:53 pm

Sounds like the power regulator on board died. On XU4 you could bypass it; not sure if it can be done on HC2 since power circuitry differs...

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odroid
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Re: HC2 dead?

Unread post by odroid » Thu Oct 03, 2019 6:03 pm

If you have a DMM, check the input power path with the schematics page 21.
https://dn.odroid.com/5422/ODROID-HC1_M ... 171017.pdf

d4ve
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Re: HC2 dead?

Unread post by d4ve » Fri Oct 04, 2019 12:01 am

odroid wrote:
Thu Oct 03, 2019 6:03 pm
If you have a DMM, check the input power path with the schematics page 21.
https://dn.odroid.com/5422/ODROID-HC1_M ... 171017.pdf
Thanks, I'll give it a try. Is this a common issue?

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mad_ady
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Re: HC2 dead?

Unread post by mad_ady » Fri Oct 04, 2019 12:47 am

Not really, no. But it can happen on power spikes

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