Pro1 bricked - not charging, not booting

[patrykgrzesiak 27]

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...

[EskeRahn 5,603]

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) 

[patrykgrzesiak 27]

I just let it discharge to zero by accident, no other special circumstances - definitely not water damage.

Edited 11 hours ago by patrykgrzesiak

[Hook 3,353]

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.