patrykgrzesiak 28 Posted Sunday at 06:35 PM Share Posted Sunday at 06:35 PM I don't know if anyone still reads it - but I will share my experiences with dead Pro1 Yesterday it discharged and turned off - I connected it to a USB charger and got no reaction, black screen, no diode. I disassembled it and charged the battery to 3.85v on an external power supply, reconnected the battery and still the same, black screen, no reaction. The voltage on the VBAT pin is 3.85v, on the POWER ON pin is 1.8v both with USB charger connected and not connected. The voltage on 1.8v pin is 0 (0.7v with USB connected) When I press the power button the voltage on 1.8v pin is 1.8v for 1-2s, then falls back to 0 (or 0.7 with USB connected), with no other reaction. I am running out of ideas... 2 Quote Link to post Share on other sites
EskeRahn 5,603 Posted Sunday at 09:31 PM Share Posted Sunday at 09:31 PM Too bad. Any special circumstances? Could it be water/moisture that got in and messed something? It sounds like a hardware failure of some kind to me. (Let us try to ping @CornholioGSM that got experience fixing PRO1/PRO1X) 1 Quote Link to post Share on other sites
patrykgrzesiak 28 Posted Monday at 03:38 AM Author Share Posted Monday at 03:38 AM (edited) I just let it discharge to zero by accident, no other special circumstances - definitely not water damage. Edited Monday at 03:39 AM by patrykgrzesiak Quote Link to post Share on other sites
Hook 3,355 Posted Monday at 01:54 PM Share Posted Monday at 01:54 PM That could create a problem if off mode charging wasn't enabled using fastboot commands, except you said you charged the battery and it still won't boot. Now I did have a problem with my old Pro1 in 2021 where the screen simply wouldn't com on at all. I tried replacing the screen, but that didn't work. Luckily it was still 3 weeks before it went out of warranty and I was able to send it to Fxtec and they fixed it. Never told me what they did beyond replacing the screen, but I had the impression they had to do something else. Not that any of this is of much help to you. Sorry. Quote Link to post Share on other sites
patrykgrzesiak 28 Posted Monday at 04:18 PM Author Share Posted Monday at 04:18 PM (edited) It is not just the screen - the phone is not detected when connected to computer When I connect 5v to the VBUS line it draws 0.5A for 1-2s, my impression is that it does not go through any initial first step when powered on Edited Monday at 06:24 PM by patrykgrzesiak Quote Link to post Share on other sites
patrykgrzesiak 28 Posted 5 hours ago Author Share Posted 5 hours ago Update: Battery was the culprit. I have replaced the battery with Xiaomi Mi6 BM39 and my Pro1 has successfully booted to Lineage 🙂 Now I can at least transfer all my data... 1 Quote Link to post Share on other sites
TeZtdevice 373 Posted 4 hours ago Share Posted 4 hours ago 58 minutes ago, patrykgrzesiak said: Update: Battery was the culprit. I have replaced the battery with Xiaomi Mi6 BM39 and my Pro1 has successfully booted to Lineage 🙂 Now I can at least transfer all my data... Does the battery Xiaomi Mi6 BM39 fit 1:1 ? 1 Quote Link to post Share on other sites
patrykgrzesiak 28 Posted 1 hour ago Author Share Posted 1 hour ago 3 hours ago, TeZtdevice said: Does the battery Xiaomi Mi6 BM39 fit 1:1 ? No - the same plug, the same voltage, similar capacity, but no way to fit it into Pro1 case Quote Link to post Share on other sites
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