VIM2 is dead? How to revive it?


#1

The user confused the polarity of the power supply on the display, the display burned down and the VIM2 stopped loading.

I can see loop to receive the message in Linux uart:

    BL2 Built : 16:32:58, Nov  3 2017.
    gxl gb5491d8 - xiaobo.gu@droid12
    set vdd cpu_a to 1120 mv
    set vdd cpu_b to 1050 mv
    set vddee to 1000 mv
    Board ID = 10
    SYS PLL lock check 1
    SYS PLL lock check 2
    SYS PLL lock check 3
    SYS PLL lock check 4
    SYS PLL lock check 5
    SYS PLL lock check 6
    SYS PLL lock check 7
    SYS PLL lock check 8
    SYS PLL lock check 9
    SYS PLL lock check 10
    SYS PLL lock failed! reset...
    GXM:Fixed PLL lock failed
    BL1:dc8b51:76f1a5;FEAT:ADFC318C:80;POC:3;RCY:0;EMMC:0;READ:0;0.0;CHK:0;
    TE: 309584

The update mode does not come even through MRegister Mode.
Is it possible to revive it?


#2

Что происходит , если запускать прошивку через кабель USB , если замыкать М-регист ?


#3

Тоже самое, никакой разницы.


#4

Похоже это аппаратная проблема.


#5

Видимо тоже в vim2 что-то сгорело, не только дисплей.


#6

Confirm a few things one by one:

  • Above is all the printing log for a each booting, right?
  • You device now just reboot in a loop and print the log above, right?

The M-Register approach should aways work out in any case, can you kindly confirm again with this, sometimes a defective USB-C cable will have same problem :wink:

Good day!


#7

I cann’t see booting, I can see this loop log only.

Vim2 just print this loop log.

M-Register does not work, I short two pads of M register and without release. And press Reset key. When I press Reset key, log does stop on 1 second, then I can see loop log again after. Cable is new.


#8

Maybe it’s a defative device, does your VIM2 works fine at first? And can you take a picture and post here so we can get more details over the picture.

If the device is defative one, we will contact your for a return.

Thanks!


#9

Yes, Vim2 worked perfect 1-2 month. Vim2 stopped working after confused the polarity of the power supply on the display…



#10

What do you mean that on the display?


#11

It is not my Vim2. It is customer’s Vim2. Customer connected HDMI display to VIM2 and confused display power polarity…


#12

No idea does the wrong operation demage the hardware or not, as usually, the M-Registor way should always work out.

image

And accoarding the printing log, should be something relative with CPU.

Do you want to ship back to us to confirm and repair?


#13

I think that CPU is dead…

Yes, I want to repair it.

PS: My VIM2 MAX work in my car every day. Thank you for the good device. And I want to try Edge-v on the future. :slight_smile:


#14

@kenny will contact you for the details soon.


#15

@Gouwa
Thank you!!!