Please help me repairing my Onyx Boox M92

Raphael1 · 08-25-2016, 10:04 AM

Hi everyone,

I broke my M92. Thought I could repair it myself and bought a screen online in China. So I took it apart, changed the screen and put it back together. BUT unfortunately it doesn't work. No change on the screen.
What to do now? Maybe someone was already more successful and could give me some hints. Any advice would be really appreciated!

Best,
Raphael

Randy11 · 08-26-2016, 03:53 AM

Hi,

In a other thread, Booxtor (http://ereader-store.de) wrote that a voltage must be adjusted for the screen. There is a dependence between the batch of the device and the device's screen, so if you change the screen, an adjustment could be required...

Have you correctly plug the battery ? Have you fully charge the battery ? Have you reset the device ? What's happen when you try to shutdown the device : the blue led ?

filmo · 08-27-2016, 08:38 AM

I downloaded Sony T1 service manual. It also mentioned calibrating replacement eink screen.

Raphael1 · 08-29-2016, 12:16 PM

Hi,
Thanks much for your answers. Yes, I saw the thing with the voltage adjustment but no idea how to do it. Maybe I find a hint in the T1 user manual.
The blue LED is working fine, haven't tried a reset yet though. I also rechecked the connections. Everything as it should I guess. What really bothers me is that I have no way to check if the screen was sent to me in a workable state. My guess is that is is really not so easy to adjust the voltage as Booxtor wrote. Instead of saving money I will be spending more...

Should have listened to Booxtor and send it in directly

Cat_Turbo · 08-29-2016, 06:13 PM

Hello
It seems that I found a topic which covers exactly your question:
https://www.mobileread.com/forums/sho...d.php?t=220794
There is a post from Boxtor where he explain how you can adjust the VCOM voltage => with the recovery update (cause I think the chip flash methode is too risky). But I don't know if it still works.
Good luck

PS: I've got the same problem with the screen voltage, but with a M96. Unfortenately there aren't many info about the VCOM voltage in the net.

PPS: Here are the instruction how you can go into the recovery mode: https://www.mobileread.com/forums/sho...d.php?t=242726. It was written for a T68, but I think it will work on a M92 too

08-25-2016, 10:04 AM	#1
Raphael1 Junior Member Posts: 2 Karma: 10 Join Date: Aug 2016 Device: Onyx Boox M92	Please help me repairing my Onyx Boox M92 Hi everyone, I broke my M92. Thought I could repair it myself and bought a screen online in China. So I took it apart, changed the screen and put it back together. BUT unfortunately it doesn't work. No change on the screen. What to do now? Maybe someone was already more successful and could give me some hints. Any advice would be really appreciated! Best, Raphael

08-29-2016, 06:13 PM	#5
Cat_Turbo Junior Member Posts: 8 Karma: 10 Join Date: Dec 2013 Device: PRS-T1;Onyx Boox M96 Plus (broken)	Hello It seems that I found a topic which covers exactly your question: https://www.mobileread.com/forums/sho...d.php?t=220794 There is a post from Boxtor where he explain how you can adjust the VCOM voltage => with the recovery update (cause I think the chip flash methode is too risky). But I don't know if it still works. Good luck PS: I've got the same problem with the screen voltage, but with a M96. Unfortenately there aren't many info about the VCOM voltage in the net. PPS: Here are the instruction how you can go into the recovery mode: https://www.mobileread.com/forums/sho...d.php?t=242726. It was written for a T68, but I think it will work on a M92 too Last edited by Cat_Turbo; 08-29-2016 at 06:19 PM.

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08-26-2016, 03:53 AM	#2
Randy11 Wizard Posts: 1,138 Karma: 1577094 Join Date: Oct 2008 Device: Samsung EB60, Onyx M92, Onyx Max2	Hi, In a other thread, Booxtor (http://ereader-store.de) wrote that a voltage must be adjusted for the screen. There is a dependence between the batch of the device and the device's screen, so if you change the screen, an adjustment could be required... Have you correctly plug the battery ? Have you fully charge the battery ? Have you reset the device ? What's happen when you try to shutdown the device : the blue led ?

08-27-2016, 08:38 AM	#3
filmo Wizard Posts: 1,326 Karma: 1077205 Join Date: Jun 2011 Device: Kobo Touch, Sony T1, Kobo Mini	I downloaded Sony T1 service manual. It also mentioned calibrating replacement eink screen.

08-29-2016, 12:16 PM	#4
Raphael1 Junior Member Posts: 2 Karma: 10 Join Date: Aug 2016 Device: Onyx Boox M92	Hi, Thanks much for your answers. Yes, I saw the thing with the voltage adjustment but no idea how to do it. Maybe I find a hint in the T1 user manual. The blue LED is working fine, haven't tried a reset yet though. I also rechecked the connections. Everything as it should I guess. What really bothers me is that I have no way to check if the screen was sent to me in a workable state. My guess is that is is really not so easy to adjust the voltage as Booxtor wrote. Instead of saving money I will be spending more... Should have listened to Booxtor and send it in directly

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