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Re: My first Kobo Touch reader died - solved

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On 2026-03-12 14:59, Carlos E.R. wrote:
> On 2025-09-09 14:09, Carlos E.R. wrote:
>> On 2025-09-09 06:08, Don Y wrote:
>>> On 9/8/2025 2:43 PM, Carlos E.R. wrote:
>>>>> [You can also find 3.7V lithiums in "traditional" battery form 
>>>>> factors.]
>>>>
>>>> I have seen higher voltages on a torch I have. But I have misplaced 
>>>> it and can not check.
>>>>
>>>> I guess any 3.7v cell would do. But trying with the cells I already 
>>>> have saves money. I just have to activate the thing and do a factory 
>>>> reset. Then the thing is garbage, can be recycled.
>>>
>>> I'd have thought the bench supply to be easier -- especially in that you
>>> could just use clip-leads to make connection to the terminals in the 
>>> reader
>>> (instead of the contacts on a "battery").
>>
>> Would be a problem if I have to connect the USB to the computer to do 
>> something. Besides, I don't remember if my bench supply goes that low, 
>> but I do remember the potentiometer had a will of his own, making the 
>> voltage go jumpy when trying to adjust it. And no, it was a new 
>> potentiometer, I built that unit myself.
> 
> I just rigged up the connection and the device did power up.
> 
> <https://photos.app.goo.gl/qWR1kVNFjcqDP8WT7>
> 
> The two last photos.
> 
> It worked and responded; I let it connect to the WiFi. I let it sync, it 
> said it wanted to update itself, and I accepted. But then it stopped 
> responding to the touch. It responded to the "home" physical button.
> 
> The battery icon went down to nearly discharged, so I connected the USB 
> cable.
> 
> No response to the touch. At some point I heard a "clack!", which I 
> thought would be one of the 3 AAA rechargeable batteries shifting 
> position inside the holder, but later realized it was something 
> electrical. No smells.
> 
> I rebooted the thing, it came back again, update done, but still not 
> responding to the touch. Thus I can do nothing with it (I want to 
> rescind the adobe login).
> 
> I will try recharging the batteries externally, but it seems I will not 
> be able to progress.
> 

I managed to power it up. I connected an external battery pack, a box 
with three AAA rechargeable battery, which seems to have the same 
voltage. I soldered the cables to the old battery micro-pcb (with a temp 
sensor, 3 cables out).

The kobo thing is robust, there was a clack which today I realized was a 
short with the kobo battery holder which is metallic, so today I wrapped 
that mini pcb in celo tape.

Yesterday it worked initially, then the touch screen stopped responding 
to the touch. I recharged the AAA batteries in their external charger, 
and tried again today. The thing did not power up. I connected the USB 
cable with the battery in "off" position, I saw a led coming up, but 
still no response. Then I powered ON the battery pack, and finally it 
booted. I followed the procedure to disable the ADE identity, then the 
Kobo identity, which was the purpose of the entire job. Success. I took 
photos of it all.

Photos: https://photos.app.goo.gl/qWR1kVNFjcqDP8WT7

-- 
Cheers, Carlos.
ES🇪🇸, EU🇪🇺;

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My first Kobo Touch reader died "Carlos E.R." <robin_listas@es.invalid> - 2025-08-30 13:26 +0200
  Re: My first Kobo Touch reader died Don Y <blockedofcourse@foo.invalid> - 2025-08-30 23:51 -0700
    Re: My first Kobo Touch reader died "Carlos E.R." <robin_listas@es.invalid> - 2025-08-31 22:52 +0200
      Re: My first Kobo Touch reader died Don Y <blockedofcourse@foo.invalid> - 2025-08-31 16:20 -0700
        Re: My first Kobo Touch reader died "Carlos E.R." <robin_listas@es.invalid> - 2025-09-01 02:54 +0200
          Re: My first Kobo Touch reader died Don Y <blockedofcourse@foo.invalid> - 2025-08-31 18:12 -0700
            Re: My first Kobo Touch reader died "Carlos E.R." <robin_listas@es.invalid> - 2025-09-01 12:25 +0200
              Re: My first Kobo Touch reader died Don Y <blockedofcourse@foo.invalid> - 2025-09-01 06:53 -0700
                Re: My first Kobo Touch reader died "Carlos E.R." <robin_listas@es.invalid> - 2025-09-01 21:46 +0200
                Re: My first Kobo Touch reader died Don Y <blockedofcourse@foo.invalid> - 2025-09-01 13:11 -0700
                Re: My first Kobo Touch reader died "Carlos E.R." <robin_listas@es.invalid> - 2025-09-01 22:22 +0200
                Re: My first Kobo Touch reader died Don Y <blockedofcourse@foo.invalid> - 2025-09-01 13:58 -0700
                Re: My first Kobo Touch reader died Don Y <blockedofcourse@foo.invalid> - 2025-09-01 14:09 -0700
                Re: My first Kobo Touch reader died "Carlos E.R." <robin_listas@es.invalid> - 2025-09-02 13:15 +0200
                Re: My first Kobo Touch reader died Don Y <blockedofcourse@foo.invalid> - 2025-09-02 13:41 -0700
                Re: My first Kobo Touch reader died liz@poppyrecords.invalid.invalid (Liz Tuddenham) - 2025-09-03 08:55 +0100
                Re: My first Kobo Touch reader died Don Y <blockedofcourse@foo.invalid> - 2025-09-03 03:46 -0700
            Re: My first Kobo Touch reader died "Carlos E.R." <robin_listas@es.invalid> - 2025-09-02 14:11 +0200
              Re: My first Kobo Touch reader died Don Y <blockedofcourse@foo.invalid> - 2025-09-02 05:49 -0700
  Re: My first Kobo Touch reader died "Carlos E.R." <robin_listas@es.invalid> - 2025-09-05 22:13 +0200
    Re: My first Kobo Touch reader died Don Y <blockedofcourse@foo.invalid> - 2025-09-05 18:26 -0700
      Re: My first Kobo Touch reader died "Carlos E.R." <robin_listas@es.invalid> - 2025-09-07 13:43 +0200
        Re: My first Kobo Touch reader died Don Y <blockedofcourse@foo.invalid> - 2025-09-07 05:38 -0700
          Re: My first Kobo Touch reader died "Carlos E.R." <robin_listas@es.invalid> - 2025-09-08 23:43 +0200
            Re: My first Kobo Touch reader died Don Y <blockedofcourse@foo.invalid> - 2025-09-08 21:08 -0700
              Re: My first Kobo Touch reader died "Carlos E.R." <robin_listas@es.invalid> - 2025-09-09 14:09 +0200
                Re: My first Kobo Touch reader died "Carlos E.R." <robin_listas@es.invalid> - 2026-03-12 14:59 +0100
                Re: My first Kobo Touch reader died - solved "Carlos E.R." <robin_listas@es.invalid> - 2026-03-13 22:50 +0100

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