Alpha won't turn on

If you're having trouble with your LattePanda Alpha & Delta, here's the place to get help.
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User avatar
Koppit
Posts: 3
Joined: Mon Nov 05, 2018 6:50 pm

Mon Nov 05, 2018 9:02 pm

Hi,

I just got my first Lattepanda and used it for 30 minutes before it suddenly died. Now it it only flash the Blue LED every 5 seconds.

I suspect there is an issue with the power circuit. When I start it the only thing that happens is that a tiny IC gets super toasty.
I used a thermal camera to measure it and it gets to nearly 160°C . The IC I am talking about (DDH 379) is near the 12VDC header.

So I did some measuring

Power connected and not turned on:
12V rail measured 0V
5V rail measured 5V
3.3V rail measured 3.3V
1.8V rail measured 1.8V

Power connected and turned on:
12V rail measured 0V
5V rail measured 0V
3.3V rail measured 2.7V
1.8V rail measured 0V

Looks to me like there is a problem with the power regulation on my Alpha. Or maybe the CPU is fried.

Image
Image

User avatar
LattePanda
Site Admin
Posts: 2467
Joined: Wed Jan 20, 2016 9:09 am

Tue Nov 06, 2018 8:03 am

@Koppit, thanks for your support and update. Would you mind to share how did you power the LattePanda Alpha with the official adapter or other personal power solution!?
Look forward to your update!
Enjoy Tinkering with LattePanda ! :lol:

User avatar
Koppit
Posts: 3
Joined: Mon Nov 05, 2018 6:50 pm

Tue Nov 06, 2018 3:01 pm

I used the offical adapter. But since it would not turn on I tried to power it with my Mophie powerstation usb-c xxl but the result was the same.

User avatar
Koppit
Posts: 3
Joined: Mon Nov 05, 2018 6:50 pm

Thu Nov 08, 2018 8:57 pm

I just measured the voltage from the USB power supply, and measured the power from the wall with a kill-a-watt style power meter.

Power connected and not turned on:
15.3V
1 watt

Power connected and turned on:
15.3V
3 watt

So I guess the problem is in the Alpha's regulation circuitry and not the power supply.

User avatar
Torn
Posts: 14
Joined: Sat May 19, 2018 9:45 am

Sat Nov 10, 2018 5:23 pm

I have the same problem as well. I got my panda alpha 3 days ago. worked great, then i put an m.2 ssd on it and installed windows on it. worked great then I got up this morning and plugged it in (using power adapter that came with latte) and no lights come on fan won't turn on nothing its like i am not even giving it power.. what do we do since shipping back and shipping to get replacement would cost a lot?

User avatar
AurelianRQ
Posts: 3
Joined: Mon Nov 12, 2018 2:28 pm

Mon Nov 12, 2018 2:42 pm

Well it seems that I have similar issue but on my case nothing powers up it's like the board is totally dead.

I just got it 2 days ago, I tried all the possible options and nothing , board simply does not work

I remove it from the socket and I will try again after few hours to see if something happens, if still nothing then I guess I will have to send it for RMA, I hope it will not take another one month to get a functional board that suppose to be functional in the first place.

User avatar
AurelianRQ
Posts: 3
Joined: Mon Nov 12, 2018 2:28 pm

Mon Nov 12, 2018 4:17 pm

Well I just tried again , and just plugged the adapter, put the usb-c adapter in and let it just to make sure is ok and then I heard a big noise like something exploded in the power adapter . I remove it fast and it smells funny , but power adapter only, nothing on the board so I guess as I found on another thread I guess on this one https://www.lattepanda.com/topic-f10t17061.html there is something wrong with the usb-c or the adaptors or no idea what but I don't want to do more tests as I don't want to get other surprises there, I guess I will have to send it to RMA.

And as a message for the team. PLEASE ,please test the units before you send them, now I have to loose maybe another 1 month to get a board that I have no idea if it will be functional or not .

I wanted to have this board for some big project so order around 10, 20 for the first batch if I find the right case for it but honestly from the first unit if I get it broken and not being able to use it is useless and not reliable, and it looks promising.

Please let me know what is the next step and what I can do now.

Thanks.

User avatar
LattePanda
Site Admin
Posts: 2467
Joined: Wed Jan 20, 2016 9:09 am

Fri Nov 16, 2018 11:19 pm

@AurelianRQ, please connect with us via email (techsupport@lattepanda.com) and attach this forum link please.
Let me know the progress here. Thanks. We will check when the product shipping back to us and provide replacement ASAP for u.
Enjoy Tinkering with LattePanda ! :lol:

User avatar
mbernal99
Posts: 11
Joined: Tue Nov 20, 2018 5:59 am

Tue Nov 20, 2018 6:01 am

I have the same problem. My Lattepanda Alpha just died on me today for no reason. I have been using the official power supply. I am doing an RMA to get a new one.

User avatar
mbernal99
Posts: 11
Joined: Tue Nov 20, 2018 5:59 am

Sun Nov 25, 2018 5:06 am

Hey check out this YouTube video I did about this problem
https://youtu.be/Cd2IIhSWI7I

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