Author Topic: Letcool White Screen  (Read 5585 times)

nikmic

  • Guest
Letcool White Screen
« on: October 17, 2011, 09:40:47 pm »
Hi all,
   I have a big problem with my Letcool.
I upgraded firmware with custom firmware (2.2) through FRM but when I restart the system with power button, I see a white screen without menu or sound  :(

I retryed with all the firmware (2.0, 2.1, 2.2), FRM recognized USB devices but I have always the same white screen.

Do you know a way to save my letcool?

In 2.2 firmware file I find a text  with a procedure to restart system but nothing (push button for a lot of time...).

Many thanks in advance

K-77

  • * Former Staff
  • Posts: 343
Re: Letcool White Screen
« Reply #1 on: October 18, 2011, 06:04:46 am »
white screen on Dingoo A-320 tell us that we don't have a proper video driver or interupt te update process . I think LetCool is some kind similiar.
« Last Edit: October 18, 2011, 06:10:52 am by kowkar77 »

nikmic

  • Guest
Re: Letcool White Screen
« Reply #2 on: October 18, 2011, 07:55:13 pm »

Hi kowkar77,
 many thanks for your response.
Is it possible to insert manual any files to permit the correct start? At the moment the letcool is completely empty, I
have only the folder empty (ex. game, ebook...).

I update with all firmware available  in internet (2.0, 2.1 e 2.2 custom...). The first update was with 2.2

Any ideas?

It is like a correct restart but without the menu images... :'(



K-77

  • * Former Staff
  • Posts: 343
Re: Letcool White Screen
« Reply #3 on: October 20, 2011, 10:33:15 am »
That mean you don't have a white screen anymore?
« Last Edit: October 20, 2011, 10:43:43 am by kowkar77 »

nikmic

  • Guest
Re: Letcool White Screen
« Reply #4 on: October 23, 2011, 06:02:52 pm »
Yes...
Always white screen.
I try to update firmware a lot of time but the result is always the same WHITE SCREEN!!!

Help!!!


I don't know if I have to make some action when I restart the Letcool after the firmware update.

Help!!!

Many thanks

K-77

  • * Former Staff
  • Posts: 343
Re: Letcool White Screen
« Reply #5 on: October 23, 2011, 06:19:22 pm »
try plug it on tv

nikmic

  • Guest
Re: Letcool White Screen
« Reply #6 on: October 23, 2011, 09:21:50 pm »
I tried but nothing.
I have white screen e no picture in TV.

I think that the system works in some way but I don't where...

It's very strange that I can update the firmware but in always attempt the result is the same.

But when I restart the system the only action is hold on the power button? Have I to push any other button or sequence?

Somewhere when I hold on power the screen is not completely white but a mix white-grey.

Very strange




nikmic

  • Guest
Re: Letcool White Screen
« Reply #7 on: October 23, 2011, 09:26:23 pm »
another thing.
when I plug the letcool in usb, the pc recognizes the letcool as a usb device.
2 unit:
1 with a lot of directory GAME, Ebook...
2 not navigable


K-77

  • * Former Staff
  • Posts: 343
Re: Letcool White Screen
« Reply #8 on: October 26, 2011, 09:03:46 pm »
It's not proper LCD driver. you must have some new LCD in yours

nikmic

  • Guest
Re: Letcool White Screen
« Reply #9 on: October 27, 2011, 10:08:13 pm »
But when I found this driver?
How can I put this in letcool? copy and paste in a directory? by FRM?

The only one information about Letcool is how update firmware.
Thanks in advance

K-77

  • * Former Staff
  • Posts: 343
Re: Letcool White Screen
« Reply #10 on: October 28, 2011, 09:39:29 am »
driver must be in firmware, you install him with them. If he is no proper then you have white screen.

nikmic

  • Guest
Re: Letcool White Screen
« Reply #11 on: October 28, 2011, 10:30:05 pm »
I understand then I used the incorrect firmware...
The problem is that I don't have the original firmware  ???
How can I do? I used the firmware in internet 2.0,2.1 and 2.2. I don't see indications about particular LCD driver.
Do you know when I can find him? How can I understand what kind of firmware I have to use?

I'm sorry for my doubts...


nikmic

  • Guest
Re: Letcool White Screen
« Reply #12 on: November 05, 2011, 08:45:55 am »
Nobody?
kowkar77?


Help  :'(

K-77

  • * Former Staff
  • Posts: 343
Re: Letcool White Screen
« Reply #13 on: November 05, 2011, 01:32:17 pm »
I am too not advanced user and I don't have Letcool so i don't know nothing about it i hope there gonna be someone who can help you. Sorry.

bamboori

  • Posts: 653
Re: Letcool White Screen
« Reply #14 on: November 05, 2011, 01:46:13 pm »
did you try the firmware updater from the lsd_blottr 2.2 zip?
maybe you should try to change the battery, buy a cheap one for that.
if nothing of this works i fear you might have killed it somehow... (like i did with another smp8000 device, a jxd-16 clone)

nikmic

  • Guest
Re: Letcool White Screen
« Reply #15 on: November 10, 2011, 08:51:20 pm »
thank you everybody
I tried with all firmware. The first update with russian firmware...

I think that my letcool is broken ...

I'm very unsaid because in some manner the letcool give some life sign but I don't know if it exist a way to wake up.


If someone have any other ideas... but for the moment thanks

bamboori

  • Posts: 653
Re: Letcool White Screen
« Reply #16 on: November 11, 2011, 03:20:02 pm »
try charging it a LONG time... or really try to swap teh battery, its not that expensive.