Quote:
Originally Posted by BatteryPowered
I had exactly the same issue with my "broken" bought Aura HD (still has USB issues unfortunately). I didn't break anything when opening up the device so after hours of trying to get touch working I put the unit aside thinking I had ruined it.
The next day I picked it back up again and took a look at the IR masking tape, took it off and everything worked. I've put the tape outside of the IR light guides and now the touch functionality is working again.
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Yupp... I have cleaned off all remains of the glue between the lightguide and the eink display for a long time.
Cleaned it multiple times; made it dirty again, masked it now with PVC electrical tape between the lightguide and display - nothing.
If there would be some I2C test points exposed in the vicinity of the NN1001 chip, I would scan what it reports while running and the aura displaying the 4-digit pin page. But there is no obvious testpoint there, nor anything standing out as the I2C / USB link between that chip and the MCU - as as the board is at least a 4 layer design, I guess the high speed lines are sandwiched in between the two outer ground planes for EMI reasons...
Do you happen to have pictures of your disassembly / reassembly efforts?