THIS IS THE VIDEO YOU NEED! I was able to repair my 60v 45a motor controller using this tutorial. Great Info! Thank You.

Two years later and your video still helps, i saved a rather expensive controller from the bin and saved me a fair bit of money as well. Cheers!

merci, très bonne explication.👍👍👍

Thanks for learning me very usefully.

Nice work ! thanks lottttttt, my inverter has same problem, same-same !

Thanks so much, great videos you have helped so much

Niiice , i understud now the soldering by this way is easy ...my was unpractible 😜 thank you

Thanks. Not sure if that's the problem with mine, but I feel inspired.

Great video thanks much appreciated!

Thank You very much for the video

Thank you for a great instructional controller repair video.

LEGENDARY MAN!

Excellent vide thanks

Actually GG 🎉 ❤ really helpful

Fantastic tutorial mate! 👍👍👍

Very nice work

Great video.handle on motor? For drawing more amps?

Awesome video

Thank you so mate

Super explain

Super class

Outstanding step by step diagnosis with the correct information inserted to expand our understanding. Thank you!

Thanks!

Very nice video

Very nice video sir. I have a question if it is possible to connect a PAS on my controller which do not have a wire connector for it? Thanks

Cordial greeting good video thanks from Colombia, you could tell me for this kind of work on these cards what kind of welder should be used so that the welds of these cards melt and can extract the spare parts thanks

very nice👍👍👍

Usefull vedio

Really great video maybe you can help me out my pos and neg are not shorted and my mosfets all read good 488ohms or so on each phase but my controller just stopped working. What else can I check

Show 👍 👌

Just like several fellow EVer's below (or above), I have a controller that tests good at the mosfet's but does not work. First one was a sabvoton 72v150a that worked for a couple months then suddenly stoped, replaced with yuyang king 120v150a, worked for 10-15 min on test bench then suddenly stopped, before i even got to test ride, i was giving just a little throttle, it was spinning nice and smooth, and slow as it should, then.....nothing... No smoke, No spark, No zap, No smell, No heat/warmth anywhere, while still on test bench. Dont have another $300 to spend on yet another controller just to blow it up potentially. Also FYI when the controllers stopped working the throttle stopped getting 5v at red supply side wire and bluetooth function stopped working also supplied by 5v. So it seems to be an issue with specifically the 5v circuits of the controller. Is there a 5v step down transformer or something similar within the controller that could be the culprit? Let me know if anymore information is needed. You seem the only one i can turn to for guidance. It sounds like I'm not the only one, looks like it could possibly be a common perdicument , what could it be? Thank you for all your helpful content.

So is any low resistance good because I'm not getting continuity but when I do the test on diode mode some of them are coming back saying 0.014, 0.039 ,0.046 some of them are like 0.110 no two are the same out of the 10 but they're all low so that means they're good yes or no? Thank you!!!!

What is that plastic like material you had used to remove the solder in MOSFET holes?

Very informative, where can I get a quality mosfets in the US? I heard there is a lot of fakes

Inscrito do Brasil...

Hi greeting i am from Peru i like your work . But idont understand very well the englis . Only a litlle . This looking great .

Toooo 👍 bro

that was very helpful

subscribed brazil

Thank you for this video! Much appreciated. One question...I shorted out my controller by touching the positive and negative wires of the controller together. It caused my controller to blow. Now I'm getting a beep from every phase wire when I test it from the positive wire to all the phase wires. Will I have to replace the controller or could I just replace the MOSFETs?

The last one is coming back 0.004 does that mean it's super low and good or is that like a short

Thank You, I do appreciate you videos, can you offer some advice, is the HY3208P MOSFET a better option than the S70N08R if I have to replace several ... ?? ... both are part of the line of 9 for my 48v 500w controller ... a Negative side HY blew out on one of the channels, then the other and then the third - the third was the S7, upon checking I found several other of both that had shorts, so I removed all and want to replace all with the better option...

Ah interesting. So I guess you could adjust your bike to have a little more tork/power too? Thanks for your info and time. I seem to have an issue with the screen info not showing all the info, i.e. what gear your in, yet does on rare occasions?

Thanks for the great video. One question. I done the procedure like you did and all works fine. But after 3 rides the same mosfet that i had changed burn again. What did i have to check? Thanks a lot.

Good morning, please tell me how the speed accelerator is designated on the electronic card , thank you, greetings from peru

Great instruction video ! Do you know what size Mosfet should I use for a 1000w controller powered by 48v / 10ah battery ? I cannot find spec sheet for blown Mosfet, so trying to find similar.

I have a 9000w with a broken leg of the mofet's jack, can I connect it to the next fet's jack?

Good day! Choosing between yyk 50a and 70a controllers for 72v3200w motor running on a 16s (60v) battery on Fiido q1s. Is the 70a worth the extra money? And size/mosfet wise is it begger/better? Thank you!

very useful video, I have a bldc controller , with only forward direction, I want to use it with reverse direction also, What changes should I do with this controller ? I have Arduino if needed.

thanks teacher i have identify my ev conversion problem my motorcycle sudden stop working and i give throttle but nothing move battery shows full charge now i will check phase wire by multimeter

Sir i m not getting the same mosfet G067N07 n-channel what should i do

I have a ZB7250 controller that went wrong. Probably from a high temperature. I opened the ZB7250 controller and accessed the printed circuit board. He was also black on short with a blue cable. I don't know what type of mosfet is used. Can you help me find out what type of transistor the ZB7250 controller uses from the FLJ SK2 2x4000W 72V scooter? Otherwise great video. I learned a lot. Thanks for help.

Hi, do you know how to enable throttle in him z20 because all Australian models comes disabled

Hi, thank you for such nice repair video! I'm currently trying to understand why my two controllers do not supply 4~5 volt to Hall sensors 😔🤔🙄 and how to repair it Any tips or advice would be much appreciated

Jus question though, after changing the MOSFET of one of the Phase, what if there is short between Red and Black battery wire, when checked with multimeter Black and red wire respectively, is there still fault in the controller ? Please help 😊

Hi brother, do you know if i have this issue please. Controller started making loud buzzing noise and now its stopped but runs in reverse only. Any help is greatly appreciated 👍🏻

I have replaced the wires in my rear hub of my NCM ASPEN 48v 13Ah ebike but I can't remember what wire goes where on the circuit board can you please help

Hi , i have 48 vdc 750 watt controller and has battery of 48 vdc and 30 ah , when i start motor run ok but at voltage around 45 vdc motor stopped and not start , i checked battery voltage while battery connected with controller voltage was 3 vdc but when i disconnet battery from controller voltage on battery was 44 vdc , can you tell me where is problem ? I have replaced cables too.

Hello , ru6888r alternative mosfate ???

What spray did you use to clean the PCB?

I have 2 controller that has no shotted mosfet yet it not coming on and there is no physical sign of damage, what else can I do

What is the circuit that you used? It has a screen. Can you tell me what it is called, how much voltage and current, and from where I can get it, please

My Motor having the Motor Brake active while turning on and my throttle voltage is always under 0,5VDC. And Motor dont run at all . On circuit board optical everything seems fine. Its an Geely Sine Wave Controller. Any ideas what the problem could be?

Do You have the schematic ?

I have a question, I have a 48v 350w motor I connect the basics: throttle, hall, motor power, battery. I get no response. When I connect the learn wire the motor stars and does not respond to the throttle at all. Throttle is ok. Can you please help I bought 2 controllers already. Note: the motor has a additional white wire coming from it.

touching mosfet's by hands without ESD protection?

Hello how make my vsett8 go faster? Meaby controller put 60v.help me.

Hi. I have a scooter on Ms energy neutron n2 plus which has a 36V 15A controller. There is a problem it will not turn off on the button. You have some idea how to solve this. Thank in advance

good day sir, my yuyangking 80a showing in the apps BRAKE BRAKE BRAKE, can you help me, what to do? thanks in advancr

Hello ...i hope that you answer to my question ...did inverse the polarity of battery power on controller can broker it ??? Thank you

اظن ان الامبير والواط =سحب التيار واستهلاك التيار في الموسفيت هل هذا صحيح؟

Pleace where i can found a teste how you have . Send me pleace . I want one for my to work .

Would pay if you can come fix my controller just bought my scooter and the front controller went dead can you help ,I'm in nyc

how to connect a potentiometer? what resistance of the potentiometer? where to connect black, red and yellow?

13:14 please make a video how to make this power supply

Hi, great video. I have a question "can we connect output of two controllers to one motor. Both controllers have same Voltage rating but different max current rating. At a given time I will turn ON one controller for use.Is there chances of other OFF controller output circuit to get damage due to presence of 48V from other ON controller? If possible please share your email address or any other means of communication. Best Regards

I like the channel but I hate the screechy intro you should sort that out

can you make a turn signal tutorial for an electric motor??please

How can I fix my power on viviebike

If only one of the mosfets was shorted do I just put the others back?

Great tutorial. But music volume is too loud compared to your speaking voice. I keep turning volume up to hear you and down when annoying music is on.

a bit late but do you know what to about this issue: my escooter only worls when plugged in, and it says the battery is full but when i unplug it, it doesnt hold the charge. i checked everything except the mosfets

hello, when I put full throttle on speed 3 my display goes out and I have to disconnect the controller from the battery to fix it on speed 1 or 2 at full throttle there is no problem what could be the problem thanks

sir i have ebike 2000w controller n 2000w hub motor.. it runs smoothly 0 to 45 kph... when it reach 48 , motor produce vibrating sounds. any tips?

My bike motor is vibrating and make a noise.i was change the 3 of hall sensers also but moter still vibrating and make a noise.i think problem is in controller.please help me for repair my bike.i was change the all mosfets also.its 48v controller.

You did not use thermal paste sometimes this is the reason for the fault, I must say however that it does look like a daggy board

i got a controller with bad mosfets ... but every time i change them they get burned again after initial testing of the board

Hi just want to ask how to trouble shoot a malfunction controller if there is no short circuit on the phase wire...all phase wire has a normal reading but if i connect it to the unit its not functional..hope you can help me.

Bro my controller is not making 4.2 throttle volts what could be the problem

Sir iam intrest

you did not put silicon paste back of Mosfet

sir can you reverse engineer it?

the controller is 45A, why they use 5x97A MOSFET?

Hi I like my counsellor to repair but I’m in London

Please tamil explain

My scooter 48v.but engine make go faster ai fink.

Plese international Untertitel ❤

Good video... music sucks!!!

I would assume they are all dead, they are so cheap to replace, find the mosfets, throw them all out

Is that stupid music nessesary?