Alpha cannot turn on (only D13 blinking)

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User avatar
chrisleungky
Posts: 5
Joined: Wed Nov 07, 2018 1:43 pm

Fri Sep 20, 2019 10:34 am

My LattePanda suddenly cannot be turned on, once I plugin the USB C , only the D13 led is blinking. When I press the power button, nothing happen.

I have tired to press the power button for 20 seconds and then unplug the USB C and press power button 20 seconds again. Plugin the USB C and press power button. Still not working.

Anyone can help me, thanks

User avatar
ccs_hello
Posts: 439
Joined: Sat Oct 13, 2018 9:16 pm

Sat Sep 21, 2019 2:36 pm

I'd like to suggest DC 12V (thru 4-pin power connector) powering method to see if
(1) the board itself can be powered that way (or the board is dead-dead), and
(2) which may coincidentally get USB-C PD subsystem back to order (first plug a USB-C USB flash drive to get it into a different mode, then try USB-C PD mode at a later time)

User avatar
vnlevanduoc
Posts: 12
Joined: Fri Oct 12, 2018 2:13 pm

Sun Sep 22, 2019 4:05 am

The same situation

I am having trouble connecting the power via USB type C, it will take some time for the lights to flash, but the system will still run

I'm thinking if powering directly via DC port 12v maybe the system will turn on automatically when powered, rather than the current USB Type C port.

But I have a question for the adapter that comes with the device, how can I convert USB Type C to DC 12v port using the PH2.0 4Pin Header?

User avatar
ccs_hello
Posts: 439
Joined: Sat Oct 13, 2018 9:16 pm

Sun Sep 22, 2019 5:03 am

No do not use the provided USB-C PD to get it to output 12V DC, it's a lot of effort and close to no benefit (besides, we don't know if that USB-C PD adapter is working or not...)
Just get a 12V 3A power adapter. A quality one is a must. Don't get the ones designed only for LED power source due to lack of output filter capacitor.

User avatar
vnlevanduoc
Posts: 12
Joined: Fri Oct 12, 2018 2:13 pm

Sun Sep 22, 2019 8:41 am

Thanks

User avatar
chrisleungky
Posts: 5
Joined: Wed Nov 07, 2018 1:43 pm

Mon Sep 23, 2019 2:59 pm

Thanks for advise , let me try try

User avatar
chrisleungky
Posts: 5
Joined: Wed Nov 07, 2018 1:43 pm

Tue Oct 01, 2019 4:07 pm

Power it up by a 12V 3A power adapter, everything works fine. Thanks everyone.

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