Hi everybody,
I have a curious case at hand :book2: So I had two Kindle 4 touch devices. Both worked fine. Then, at some point I let one of them (let's say it's number 1) discharge for a long time after which I was not able to turn it on anymore. I tried charging with charger, via PC, original cable, some other cable, removing battery, holding the power button forever etc etc etc... Nothing. The charging orange light never turned green or went off. As if the device was locked in permanent charging. "Dead battery" I thought and got me a new one. But it didn't help one bit. Having nothing or very little to lose I opened both devices and cross-connected the FFC (flexible flat cables): screen 1 to mainboard 2 and viceversa.
Now the duo of screen 1 and mainboard 2 was working fine (which proves the screen 1 was fine in itself), except the touch controls were still coming from device 2 (I did not expect that - I though the image and touch controls would all be coming via the FFC). Meanwhile, screen 2 + mainboard 1 still wouldn't start. Which leads me to conclusion that the mainboard 1 was somehow damaged.
So - what might have been the cause of this, how to find what is actually broken and if there is any way to fix it? :help:
This is more a case of curiosity rather than necessity, but still :) :iloveyou:
I have a curious case at hand :book2: So I had two Kindle 4 touch devices. Both worked fine. Then, at some point I let one of them (let's say it's number 1) discharge for a long time after which I was not able to turn it on anymore. I tried charging with charger, via PC, original cable, some other cable, removing battery, holding the power button forever etc etc etc... Nothing. The charging orange light never turned green or went off. As if the device was locked in permanent charging. "Dead battery" I thought and got me a new one. But it didn't help one bit. Having nothing or very little to lose I opened both devices and cross-connected the FFC (flexible flat cables): screen 1 to mainboard 2 and viceversa.
Now the duo of screen 1 and mainboard 2 was working fine (which proves the screen 1 was fine in itself), except the touch controls were still coming from device 2 (I did not expect that - I though the image and touch controls would all be coming via the FFC). Meanwhile, screen 2 + mainboard 1 still wouldn't start. Which leads me to conclusion that the mainboard 1 was somehow damaged.
So - what might have been the cause of this, how to find what is actually broken and if there is any way to fix it? :help:
This is more a case of curiosity rather than necessity, but still :) :iloveyou: