[DEFECTIVE] colored rectangles at startup and no keyboard support (LP Alpha) - RMA Request

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User avatar
jamienc
Posts: 10
Joined: Sat Apr 16, 2016 7:38 am

Sat Jan 25, 2020 10:03 am

Hello, I have changed the Sata interface in Bios from Default to Gen3 and activated Legacy Support.

Since then, the internal HDMI port does not work anymore and shows the following on startup.
IMG_20200125_082839.jpg
IMG_20200125_082839.jpg (2.76 MiB) Viewed 3174 times
Now I have connected a graphics card to the m.2 x4 connector and used the HDMI port there. Now the LPA boots into the UEFI shell, but accepts any keyboard input here, even before in the bios.
IMG_20200125_100232.jpg
IMG_20200125_100232.jpg (2.65 MiB) Viewed 3174 times
IMG_20200125_100204.jpg
IMG_20200125_100204.jpg (2.63 MiB) Viewed 3174 times
I have already tried the following:
- 3 different keyboards (with and without cable)
- USB-C HUB
- USB from GPIO pinout (also here with the 3 different keyboards)
- Separate power supply to GPU and LPA
- Battery removed
- Hard Reset Trick
- Blind Bios Reset (F3 - Enter - F4 - Enter)

now I can think of absolutely no solution to reset the bios again...

hopefully someone here can help me.

With kind regards from Austria
Christian
Last edited by jamienc on Fri Jan 31, 2020 8:26 am, edited 3 times in total.

User avatar
ccs_hello
Posts: 633
Joined: Sat Oct 13, 2018 9:16 pm

Sat Jan 25, 2020 3:22 pm

Christian,

Sorry to hear that.

If the first screen is what you had shown (noises on top and bottom side), most likely
there is some power-rail damages (such as HDMI driver, embedded controller <-- keyboard/mouse go thru this IC )

Please inspect the motherboard carefully to see there is any blackening on components, PC Board, etc.

ccs_hello

User avatar
jamienc
Posts: 10
Joined: Sat Apr 16, 2016 7:38 am

Sat Jan 25, 2020 8:52 pm

thx 4 the quick answer.

so i check it and there is nothing strange or black on the board.

can this happen, when i just change to lagecy support and Sata Gen3 ?
Last edited by jamienc on Sat Jan 25, 2020 10:17 pm, edited 1 time in total.

User avatar
ccs_hello
Posts: 633
Joined: Sat Oct 13, 2018 9:16 pm

Sat Jan 25, 2020 9:47 pm

Kind of feeling it's just coincidence.

User avatar
jamienc
Posts: 10
Joined: Sat Apr 16, 2016 7:38 am

Sat Jan 25, 2020 10:11 pm

hmm. it is possible...

can i do an RMA case for this?

User avatar
jamienc
Posts: 10
Joined: Sat Apr 16, 2016 7:38 am

Fri Feb 14, 2020 5:01 pm

i managed to reflash the Bios.
I posted my "howto" here https://www.lattepanda.com/topic-p32404.html#p32404

this threat can be closed :)

Thx for your Help.

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