GE washing machine burned motor teardown to find fault 

Sorry for the numerous comments but THANK YOU for the tutorial on this design. The washer has been discontinued but I still see quite a few of them in the field and always wondered about the internals of this motor with that board.

Good stuff! Love the hands-on theory here, duly posted in EEVblog's Repair section under "sticky" *Repair Documents and Links*

You are lucky. When my mother's microwave oven failed she spent a Sunday afternoon with me trying to fix it, and I did. The next time I visited her she bought a new one and threw the old one out.

great video, please more like this troubleshooting common appliance

Great detailed video!!

Exelente video amigo muchas gracias me ayudó para reparar mi lavadora un saludo desde mexico

Nice video man, see ya

The motor may not be shorted right now but it is close to toast. Partly carbonised insulating varnish sooner or later will give in at operating voltage/current.

I have one of these motors, that I am attempting to convert to use as a small tool motor. Is there any way to wire these to run on a standard 120v plug (US) ? I can't seem to find anything with google searches/youtube searches. Thanks!

Brilliant

isn't the black and blue wire connector DC in? why would a temp cutout circuit need such thick wires? you could wire a temp cutout into the 3-phase system

I just salvaged one of these motors today. Looking up how to power it was not going well until I found your video here, and it's perfect. I'm still uncertain about a few things but once I get more info hopefully it will help. Nice job.

I am glad in ran into your video. I have got the same exact thing going on here on my table. I am wondering how many volts did youi apply. I went ahead and chanced it and plugged into the 110 outlet and it began to take off. I unplugged it om split second. I wasn''t sure what role the capacitor would be playing. My capacitor came from another washing machine induction motor ( Kenmore). It is hard reading it but guessing from the writing, it appears to be around 250 uf. When I ran it without the capacitor it just hums like yours. I am wondering if I can run the motor with the capacitor on because I like to use it for other projects. The motor seem rather quiet new, nothing wrong with it. I checked them transistors as you did, they all read around 5.30V I got this washing machine from some motel that was junking it as someone told them the controller was shot. Come to think of it, I should have not taking apart, But I had no idea that one can trouble diagnose these things following their instruction. But that is another story. Now I just want to use the motor. So I don't know what the three phase with this motor means, What should be the voltages? Thanks.

Well, what did I do? I wasn't paying attention and I ran mine for a minute or more. Did I short something inside at 60 microfarade? If so what should I do now? Nothing smoked, no heat anywhere that I felt. However it appears it has copped an attitude. It doesn't want to run by means of capacitor if you will and I don't have a three phase 150 supply, although I have 220 three phase supply using an LG washing machine Bldc. I am almost certain I shorted out between two leads where I hooked up the capacitor. Any ideas? :-) I am sure I have he same motor. 150 volts 3 phase.

Hi how you doing got a question for you. The same y working on mind spining very slow. Any inf. Or help.

Did you ever fix the inverter and the washer?

how does the igbt fail ?

Hello, I thought you could help me, I have a ge gtwn4250, my main board failed, even though I have looked for the service manual I have not found it, but I have seen manuals for similar motors that in the C4 connector that have 5 terminals and to do a test in spin mode, pin 5 and pin 2 should have 12 vdc equal to between pin 5 to 4, 12 vdc, but the motor I have is the same as the one in the video, the c4 connector only has 3 cables, How could I run the motor directly without the main board, the 12 v only just vdc or is it a pulsing signal with some frequency? , the motor card is good, the main card is the one that is wrong, I need to know the voltages and the waveform, to be able to start the motor without the main card, if you could help me I would appreciate it very much.

A lot of electronics for a motor but I guess it's cheaper than a mechanical transmission. Makes me wonder about my own machine, gives off a slight burning motor smell when worked. If it moves North with me I may have to take a look. This is one that could be found quickly with a non-contact thermometer.

My indesit failed a few weeks back luckily I have a neighbour Jamaica Glenn He diagnosed the control board an he will show me how to fit it ATB buddy

A couple of observations - IGBTs are used at high voltage because they are less sensitive to high voltage transients coupling back to the gate electrode than MOSFETs. Unlike MOSFETs they have a definite forward voltage when conducting of around 1.5 to 2.5V, which makes them inefficient for low-voltage circuits. They are also a lot slower to switch than MOSFETs as they are a minority-carrier device, PWM rates of a few kHz are typically used, not tens of kHz. I wouldn't be surprized if the driver chip for the IGBT gates was faulty, triggering the IGBT to fail, nor if it was high voltage related failure of the IGBT itself. I am surprized the thing didn't just use an "intelligent power module" - basically a 3-phase IGBT bridge in a single package, that would simplify the board. And finally it seems the single thermal cutout isn't enough to detect winding overheating in a 3-phase induction motor, which is pretty obvious if they had thought about it.

When is the PT12 (or PT11.4) of the discrete audio amplifier build project coming up?

That motor looks as though it's hardly done any work! How old was the appliance... and was it still under warranty? When i meet broken down washing machines they're often filthy, dusty, dirty, rusty things inside that have done years and years of service, & the owner says they just can't afford a new one so can i make the lowest cost possible repair to get it going for a bit longer.

Is this from a GE Hydrowave Washer?

Hello dear do have still this borad I need

Lol. Looks on floor. All the parts from my old dishwasher. Yeah. Silicon coating, aint that a bitch :) Great vid

No Snickers?

Ok I'm lost here. The cap. That came out of this washer has 5 connectors one is ground

The same fun is to be had with electric cars.

FULL BRIDGE RECTIFIER!!! confirmed at 2:28

I have that motor, $150, u pay the shipping but too late now.

Such an incredibly over engineered top load washer and for what, to reverse the rotation and monitor speed. Waste