Problem Debricking: Cannot enter Diagnostics Mode - Page 2

knc1 · 01-27-2013, 11:25 AM

That was mentioned somewhere here - that the screen connector has been known to come lose.

The only two things I can think of that would prevent the screen flashing when the kernel driver starts, are:

Screen not connected ;
U-Boot can't find a valid kernel image and the machine is sitting at the U-Boot prompt.

(Which is kind of hard to see without the serial port connections.)

Marclee · 01-27-2013, 11:41 AM

How can we check if it's a broken screen?

Here's a pic I took imgur

NiLuJe · 01-27-2013, 12:20 PM

Can't remember when exactly (or if it even happens in diags), but the LED flashes for a brief time at one point during the boot process. Might be worth checking, too.

Marclee · 01-27-2013, 07:32 PM

Quote:

Originally Posted by knc1

Screen not connected ;
U-Boot can't find a valid kernel image and the machine is sitting at the U-Boot prompt.

(Which is kind of hard to see without the serial port connections.)

Soooo...I could go and buy me usb-to-serial cable and then fire up a connection? Is that feasible? I don't have much technical knowledge but I am almost dependent on this device.

knc1 · 01-27-2013, 09:31 PM

Check the index pages for a tear-down video or two - then check if that screen cable has come loose from the connector.

Marclee · 01-28-2013, 04:07 AM

Quote:

Originally Posted by knc1

Check the index pages for a tear-down video or two - then check if that screen cable has come loose from the connector.

Nope...opened it up and the screen-connector was snugly plugged in. Reinserted, etc. No change.

Marclee · 01-28-2013, 05:41 AM

Are you friggin' kidding me???

I came home from a local electronics shop mainly because I wanted to get a laserpointer for my cat but also so that I could get a screwdriver set and play around with the hardware of the kindle a bit more.

Now, I ejected the battery and wanted to test the battery with my newly bought multitester. 4,13V...I guess the multitester is of shitty quality?

Well, I have totally given up at this point. I plug in the battery again and DAMN...a new screen! It's the kindle tree now! I am excited and play around and the screen responds to the power button. It doesn't boot up though because I have flashed it with a new kernel I think and haven't put up the partition yet.

Long story short: I managed to get into diags mode! I continue debricking now.

I'll keep you posted.

knc1 · 01-28-2013, 05:56 AM

Quote:

Originally Posted by Marclee

Now, I ejected the battery and wanted to test the battery with my newly bought multitester. 4,13V...I guess the multitester is of shitty quality?

Nope.
That is about a 70% charge or better - full charge is 4.2v

Marclee · 01-28-2013, 06:10 AM

Alright, DONE.

I am happy again and want to thank you all!! I wouldn't have gotten it back without you guys.
Thank you twobob, ixtab, knc1, NiLuJe and silver18!

twobob · 01-28-2013, 08:33 AM

Nice one.

01-27-2013, 11:25 AM	#16
knc1 Going Viral Posts: 17,212 Karma: 18210809 Join Date: Feb 2012 Location: Central Texas Device: No K1, PW2, KV, KOA	That was mentioned somewhere here - that the screen connector has been known to come lose. The only two things I can think of that would prevent the screen flashing when the kernel driver starts, are: Screen not connected ; U-Boot can't find a valid kernel image and the machine is sitting at the U-Boot prompt. (Which is kind of hard to see without the serial port connections.)

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01-27-2013, 11:41 AM	#17
Marclee Member Posts: 16 Karma: 10640 Join Date: Jan 2013 Device: Kindle Touch	How can we check if it's a broken screen? Here's a pic I took imgur

01-27-2013, 12:20 PM	#18
NiLuJe BLAM! Posts: 13,477 Karma: 26012492 Join Date: Jun 2010 Location: Paris, France Device: Kindle 2i, 3g, 4, 5w, PW, PW2, PW5; Kobo H2O, Forma, Elipsa, Sage, C2E	Can't remember when exactly (or if it even happens in diags), but the LED flashes for a brief time at one point during the boot process. Might be worth checking, too.

01-27-2013, 09:31 PM	#20
knc1 Going Viral Posts: 17,212 Karma: 18210809 Join Date: Feb 2012 Location: Central Texas Device: No K1, PW2, KV, KOA	Check the index pages for a tear-down video or two - then check if that screen cable has come loose from the connector.

01-28-2013, 05:41 AM	#22
Marclee Member Posts: 16 Karma: 10640 Join Date: Jan 2013 Device: Kindle Touch	Are you friggin' kidding me??? I came home from a local electronics shop mainly because I wanted to get a laserpointer for my cat but also so that I could get a screwdriver set and play around with the hardware of the kindle a bit more. Now, I ejected the battery and wanted to test the battery with my newly bought multitester. 4,13V...I guess the multitester is of shitty quality? Well, I have totally given up at this point. I plug in the battery again and DAMN...a new screen! It's the kindle tree now! I am excited and play around and the screen responds to the power button. It doesn't boot up though because I have flashed it with a new kernel I think and haven't put up the partition yet. Long story short: I managed to get into diags mode! I continue debricking now. I'll keep you posted.

01-28-2013, 06:10 AM	#24
Marclee Member Posts: 16 Karma: 10640 Join Date: Jan 2013 Device: Kindle Touch	Alright, DONE. I am happy again and want to thank you all!! I wouldn't have gotten it back without you guys. Thank you twobob, ixtab, knc1, NiLuJe and silver18!

01-28-2013, 08:33 AM	#25
twobob ( ͡° ͜ʖ ͡°){ʇlnɐɟ ƃǝs}Týr Posts: 6,586 Karma: 6299991 Join Date: Jun 2012 Location: uti gratia usura (Yao ying da ying; Mo ying da yieng) Device: PW-WIFI\|K5-3G+WIFI\| K4\|K3-3G\|DXG\|K2\| Rooted Nook Touch	Nice one.

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