There is no hall sensor.

Ok, assemble everything back and try the aliexpress board again, and let's see

 

Ok, assemble everything back and try the aliexpress board again, and let's see

It's acting the same

 

So, I moved components from the left side of the board(some of them) to the right side of the board, and it's spinning!!! But, the spinning is not smooth, it kinda breaks and stutters, but it's not static like before. I get even full spins now!

 

There is no hall sensor.

If this is an original motor or OEM replacement, it should definitely have a hall sensor in order to calibrate speed, RPM, load size, etc. The hall sensor is small PCB with a female connector and usually located near or on top of the stator inside of a plastic housing. These washers are computers and without the hall sensor the motor will not operate properly. If there truly isnt a hall sensor for the motor then I would suggest reseraching how motor data is transmitted to the controller board. What is the plastic housing in this photo below?

 

If this is an original motor or OEM replacement, it should definitely have a hall sensor in order to calibrate speed, RPM, load size, etc. The hall sensor is small PCB with a female connector and usually located near or on top of the stator inside of a plastic housing. These washers are computers and without the hall sensor the motor will not operate properly. If there truly isnt a hall sensor for the motor then I would suggest reseraching how motor data is transmitted to the controller board. What is the plastic housing in this photo below?View attachment 362752

The plastic part is just a plastic connector without any electronicsm, not a sensor. From my research, it does current sensing, and that's how it detects speed somehow.

I have attached the schematics from IPM module chip.

Check my previous post where I have repositioned those transistor(or whatever they are) from the left side on the right side of the board, and motor with that gave me some spins, but they were not smooth, more jumpy, like one phase is acting up(or maybe those componenets are damaged too) but this is some progress made on this board for me!


I am not sure what components are these exacly to replace them all, nor I am not sure how to test them, i wrote the markings on the attached images, maybe i didn't read some of them 100% correctly with just my eye, but I hope I did.

 

From your description its sounding like the fault is centered around the motor sensors and its path to the control board is broken. I would suggest focusing in on locating the sensors that the motor uses to communicate with the control board and testing them. Also test the continuity and resistance of the motor/ check the stator windings again thoroughly. Also take your finger and push the windings to see if any of them move or if any windings are touching the next set of windings.

Your washing machine is 8-10 years old and the motors are known to have faults with some cases as early as 5 years. You said that your washer has 2 motors? Also what is the washing machine model number?

 

From your description its sounding like the fault is centered around the motor sensors and its path to the control board is broken. I would suggest focusing in on locating the sensors that the motor uses to communicate with the control board and testing them. Also test the continuity and resistance of the motor/ check the stator windings again thoroughly. Also take your finger and push the windings to see if any of them move or if any windings are touching the next set of windings.

Your washing machine is 8-10 years old and the motors are known to have faults with some cases as early as 5 years. You said that your washer has 2 motors? Also what is the washing machine model number?

Motors are ok, the current sensing part gone bad, as I said, when i replaced those transistors, it started to spin(before it was static), but spining isn't perfect, its a bit jumpy. That's why I posted the images with parts of the board.

Yes, it has 2 motors, both are the same, and behave the same.

Model is: WW70M644OPW/LE

 

Soo, update, motor is spining nicely now!

So, firstly what I did was replace parts in yellow boxes, that didnt changed anything
then I replaced pats in red box marked "2" and washer motor started to spin, but the motor behaved jumpy!

Then i discovered resistor marked "1" had different resistance in comparison to the ones next to it in row, so I replaced it!
And motor is now spining nicely without issues or errors( I get sometimes error 3CP6 error whitch sayd Driving part stop (motor offset error)) but it's working!

Next is to place IPM chip for the second motor (the right side of PCB) and see to make that work as it should.

 

Hi,
You may have seen this; Bing Videos
Good luck............

 

Hi,
You may have seen this; Bing Videos
Good luck............

Thans, but the issue is Inverter board fail.

 

View attachment 362799
Soo, update, motor is spining nicely now!

So, firstly what I did was replace parts in yellow boxes, that didnt changed anything
then I replaced pats in red box marked "2" and washer motor started to spin, but the motor behaved jumpy!

Then i discovered resistor marked "1" had different resistance in comparison to the ones next to it in row, so I replaced it!
And motor is now spining nicely without issues or errors( I get sometimes error 3CP6 error whitch sayd Driving part stop (motor offset error)) but it's working!

Next is to place IPM chip for the second motor (the right side of PCB) and see to make that work as it should.

oh nice, what lead you to test the resistors?

 

oh nice, what lead you to test the resistors?

At this point I'm testing everything... But I don't know how to test those black transistors...

 

At this point I'm testing everything... But I don't know how to test those black transistors...

Ah cool! One major piece of advice I learned was that test only what you know. This approach saved me a ton of time and also builds a disciplined approach using logic when locating faults. Nonetheless I think what you're doing is great and definitely continuing exploring and taking the deep dives. Now to test those black transistors I would recommend looking up the part numbers and reading over the data sheets. Click Datasheets in the top orange navbar, then type in the part number.

 

Ah cool! One major piece of advice I learned was that test only what you know. This approach saved me a ton of time and also builds a disciplined approach using logic when locating faults. Nonetheless I think what you're doing is great and definitely continuing exploring and taking the deep dives. Now to test those black transistors I would recommend looking up the part numbers and reading over the data sheets. Click Datasheets in the top orange navbar, then type in the part number.

The thing is, I can't do much with multimeter here except test resistors... So it's a very complicated thing

 

The thing is, I can't do much with multimeter here except test resistors... So it's a very complicated thing

What model of multimeter do you have? Does it have diode mode? if so its best to test transistors in isolation which means you would have to desolder them from the board.

 

What model of multimeter do you have? Does it have diode mode? if so its best to test transistors in isolation which means you would have to desolder them from the board.

I have some cheap Parkside PZM 2 A2 multimeter. It does have diode mode, but yeah, desolering all those tiny transistors is real pain. Those 3 in the current sensing part are A1, they are 2 diodes inside. but there are other with different markings around the main IC, that will be pain

 

Olá,

Tenho uma placa inversora DC92-02139A que retirei da minha máquina de lavar e estou tentando consertá-la. A máquina apresenta o erro 3C2 (Parada da parte de acionamento (erro de sobrecorrente do motor)). O motor tenta girar no modo de serviço, mas apenas dá pequenos solavancos contínuos.

Tentei trocar algumas peças, substituí o chip IPM, troquei alguns resistores, mas não tenho certeza do que pode estar errado... Anexei a imagem da placa (removi o IPM do segundo motor da placa, e o lado superior esquerdo é menos importante porque controla o motor secundário; tenho duas placas idênticas que estão apresentando o mesmo problema, uma é a original (a que estou tentando consertar) e outra que comprei no AliExpress e funcionou por apenas um dia)).

Os capacitores grandes estão ok, eu os testei com um multímetro. Possui 2 motores BLDC.

Então, se alguém tiver alguma ideia, por favor, me avise.
Obrigado!
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Olá, realizo manutenção diariamente destes modelos, o seu problema aí pelo que parece é qualidade do IPM, inclusive em uma foto consigo perceber o IPM de baixa qualidade apenas pelos terminais. Outro ponto importante, toda lavadora que utiliza correia precisa obrigatoriamente de aterramento no motor, 90% dos danos em lavadoras com correia é provocado por eletrostática ( aterramento resolve )

 

What?

 

Yes, I replaced IPMs and TLV9064 chips, and grounded motors, it reaches full speed now, without showing any errors. But when I start Drain and Spin program, it resets after it tries to spin the motor. Are you familiar with that issue?

 

I have run overall checkup, and on agitation step, it throws 3C-P6 error...