S10+ All of a sudden went black and now wont turn on

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Unrelated to any custom roms ( I hope this is not offtopic )
S10+ All of a sudden went black and now wont turn on
Vol Down + PWR does not work
PWR 30 sec does not work
Phone was running Android 11 stock.
This morning it behaving strangely ( some app were crashing ). It had no water damage, no mechanic damage of any kind.
After trying to run Strava before starting my run it went black with no way to get it back.
Sitting on the charger for few hours by now with no sighs of life.
Wireless charging - so sighs of life.
Any ideas what can I do with it?

Thank you!
 

blackhawk

Senior Member
Jun 23, 2020
9,862
3,915
Samsung Galaxy Note 10+
Maybe a battery or mobo failure if it's completely nonreactive ie no sounds or images when plugged into charger.
Try a known good charger/cable.
You could let it sit until the battery completely self discharges and hard resets, but if it's near 100% that would take years with no load.
 
Oh, I hope this is not mobo :( I can fiddle with bat but not with mobos
Tried again on wireless charger, charger reacted as if phone is charging. So phone and charger are talking to each other. But still no signs of life. Will leave it charging overnight...
 

blackhawk

Senior Member
Jun 23, 2020
9,862
3,915
Samsung Galaxy Note 10+
There is a strong suspicion that charge IC is gonsky :(
Will try to fix it myself, this is going to be fun :D

If it's a multilayered PCB be very careful as they are easily damaged by heat/poor technique. If you don't have experience working with surface mount components and flat packs this isn't the place to learn.
Use lead based rosin core solder only as it flows much better than no lead crap and at lower temps.
 

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    Guys! After some time of pokin around I have fixed it!!!!
    Check this out
    Had to make a FrankenSamsung... :D