Greetings folks,
I wonder, if there is a section for troubleshooting also smart watches in this forum. I put it there, because it is closer to mobile devices, I suppose.
Anyway, I got this watch as not working after very long time of not using them ( not sure, how relevant is this information, it could be also any other issue, but that's what I was told ). Indeed, the battery was totally low = 0V, but even after reviving it with the help of PSU, or even if I replace battery with PSU 4.0V, there is no sign of life after pressing the power button. Pressing both buttons should display 'boot menu' for factory reset, etc. This also doesn't work. Some more details:
- I have battery voltage on power button. This voltage falls down to 0V when I press it
- tried also connecting only board itself to PSU, without any other device connected ( display, pwrbtn,.. ), still same. Tried simulate pressing the pwrbtn on the board, without pwrbtn being connected
- board has 85uA power consumption, not sure how it should looks like in normal condition
- charging works fine, but it charges only for about 2 and half minutes, then it stops charging. Checked battery voltage before and after that charging time and yes, it really charged the battery a little ( 0.017V to be exact )
Is this fixable? Is there any schematic/boardview available? I really doubt, but who knows, better ask. Thank you so much for any clue in advance.
I wonder, if there is a section for troubleshooting also smart watches in this forum. I put it there, because it is closer to mobile devices, I suppose.
Anyway, I got this watch as not working after very long time of not using them ( not sure, how relevant is this information, it could be also any other issue, but that's what I was told ). Indeed, the battery was totally low = 0V, but even after reviving it with the help of PSU, or even if I replace battery with PSU 4.0V, there is no sign of life after pressing the power button. Pressing both buttons should display 'boot menu' for factory reset, etc. This also doesn't work. Some more details:
- I have battery voltage on power button. This voltage falls down to 0V when I press it
- tried also connecting only board itself to PSU, without any other device connected ( display, pwrbtn,.. ), still same. Tried simulate pressing the pwrbtn on the board, without pwrbtn being connected
- board has 85uA power consumption, not sure how it should looks like in normal condition
- charging works fine, but it charges only for about 2 and half minutes, then it stops charging. Checked battery voltage before and after that charging time and yes, it really charged the battery a little ( 0.017V to be exact )
Is this fixable? Is there any schematic/boardview available? I really doubt, but who knows, better ask. Thank you so much for any clue in advance.