It's fine to keep it in this thread.
If you can get the STI and you can replace them in the BMS, I would do that first and see if it changes anything. That would give us some extra info as well.
JK 4S BMS brand new with errors
- Thread starter Csayers
- Start date
It's fine to keep it in this thread.
If you can get the STI and you can replace them in the BMS, I would do that first and see if it changes anything. That would give us some extra info as well.
That one is different, and has different configuration/frequency. You really want the STI3470 (or the RY3820 non E version - almost impossible to get) - all the rest is untested and could potentially lead to damage. If you want, I can send you a set.
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.
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help me find the cause, where to look? I think all bms are made according to typical scheme, please indicate where to look for the cause of the malfunction, thanks.
All power mosfets are - serviceable, I test it.
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help me find the cause, where to look? I think all bms are made according to typical scheme, please indicate where to look for the cause of the malfunction, thanks.
All power mosfets are - serviceable, I test it.
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These chips are the likely culprit:
You can replace these with a STI3470 (or JW5352M) and that should fix the CPU AUX Anomaly. Not sure why you have the "temperature sensor is abnormal" warning. That either means the sensor was disconnected when you took the screenshot, or the sensor is bad/badly connected.
You can PM me your address and I will send you some replacement chips. You do need some soldering skills with SMD components, preferably with hot air.
You can replace these with a STI3470 (or JW5352M) and that should fix the CPU AUX Anomaly. Not sure why you have the "temperature sensor is abnormal" warning. That either means the sensor was disconnected when you took the screenshot, or the sensor is bad/badly connected.
You can PM me your address and I will send you some replacement chips. You do need some soldering skills with SMD components, preferably with hot air.
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 replace it.
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
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R1=683(68kOm)
R2=153(15kOm)
Vout=0.6*(1+R1/R2)= 3,3V
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Do not know what to do now, maybe it's a reset button need pressed? but no buttons at all
Vout=0.6*(1+R1/R2)
R1=104(100kOm)
R2=153(15kOm)
Vout=0.6*(1+R1/R2)= 4,6V
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R1=683(68kOm)
R2=153(15kOm)
Vout=0.6*(1+R1/R2)= 3,3V
=============================
Do not know what to do now, maybe it's a reset button need pressed? but no buttons at all
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What exactly did you replace it with? Chip type? It still reads BCE1H in your picture.
Also, what version of the App are you using?
S47Bcj4 --> got a datasheet? Can't find that reference anywhere.
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Ok, STI3470. That one should be fine. I would suggest replacing them all. One of the issues with the original chips in some versions was that they had a 500kHz chip instead of a 600kHz one, and that messed things up. I had a similar situation where the output voltage was fine, yet the issue was fixed replacing the component. I'm not saying this is definitely the case, but if you have them, worth a shot.
There could be another chip that needs to be replaced when this issue occurs. I need to go check my notes, it's been a while...
There could be another chip that needs to be replaced when this issue occurs. I need to go check my notes, it's been a while...
Might just be an LDO.
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.
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