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upnorthandpersonal Thanks for the quick response, those chips you marked are labeled (BCE1H). I would have been looking for what burned out for a long time, thanks for the prompt. We have where to buy them, yes, I have a lot of experience in soldering, thanks again, I’ll buy it and try to...

I replaced 2 of them from one side - 1 and the other side - 1 S47Bcj4 - the new ===================== 1 year I use - enjpower-bms-3.7.4.88 but now I install - 极空BMS_4-9-2.apk , the last app what support android 6

https://datasheet.lcsc.com/szlcsc/2001060933_TMI-STI3470_C478938.pdf

I soldered the diode instead of the LDO, now the A13 is powered by 2.9 Volts. But nothing has changed. I'll put this idea aside for now when I gain more strength =)

ordered these DC-DC after tomorrow should come. I measured the voltages incoming and outgoing from these DC-DCs, one comes out 3.3V from the other 4.5V. Something I haven’t met who needs 4.5V

I think know the problem. smd component marked as r3dlb. do not know what is it, can't find datasheet. But IN +3.3 , out 2.0V but A13 Amplifier (lm321) need supply from 2.7

this capacitor is gone, it may have been poorly soldered, I don’t know if this could lead to a breakdown

I replaced the one that gave out 4.5V, nothing has changed. Then I calculated the volts, it turns out that all volts are correctly issued. Vout=0.6*(1+R1/R2) R1=104(100kOm) R2=153(15kOm) Vout=0.6*(1+R1/R2)= 4,6V =================================== R1=683(68kOm) R2=153(15kOm)...

I think it's 3V Voltage Stabilizer. in front the same

I understood what happened, hk32f030mf4p6 was short of 3 volts, R3D is all working. I desoldered (hk32f030mf4p6) and 3 Volts was restored, signals from the T1 T2 go to hk32f030mf4p6. I don’t know if I can read (hk32f030mf4p6) and flash new one.

Hello? I have JK-BD6A17S8P and the same problem (Protection (CPU AUX Anomaly)). I use it in battary for scooter. External Temp sensors have 9.4kOm, voltage to sensors 2V. I do not think it's sensors problem. ============================================== help me find the cause, where to look? I...