Elektro Helios TT1168 motor does not turn

[yurtesen]

Hello,

I am back 🙂 my washer developed a strange problem. Motor does not rotate the drum and the timer does not go forward at some points. Sometimes the drum makes few rotations. I already checked the motor for continuity and it seems fine. I also tried to check if power was applied to motor brushes and it is not. So I think either the timer or the motor control unit is faulty.

Edit: I made some additional tests, while at washing cycle. I can manually rotate the drum clockwise, and after a while I hear two click sounds from the relays in the motor controller. I believe it changes direction. After that it is able to rotate counter-clockwise and it makes two clicks again then waits for me to rotate it clockwise again. This tells me that probably the relay is gone but machine gets stuck because it is waiting input from motor tacho before changing directions again. I think the board is from 1996 so it wouldnt be a surprise.

What do you think is the problem? or what can be checked?

The timer is an AKO TYP 514 084 and motor control unit is AKO 546 546 47 553-02

Thanks,
Evren

[electrofix]

Re: Elektro Helios TT1168 motor does not turn

have you taken the motor control board out and looked for bad solder joints

Dave

[yurtesen]

Re: Elektro Helios TT1168 motor does not turn

electrofix wrote:have you taken the motor control board out and looked for bad solder joints. Dave

It is alive! I thought this kind of problem wouldn’t happen after 18 years and it was 4AM so I didn’t start removing the control board from there (it required removing all connectors to look behind it). But you were absolutely right.

The solder joint was completely burned off (picture was before cleaning):

I cleaned the burned area with electronics cleaner and there was enough pad left to make a good connection and if it ever fails again, I can put a jumper cable.

After repair (it became so shiny, it reflects the board color at its edges :):

I am now making a test run and everything seem to work fine. Thanks for the idea to check the connection!

[electrofix]

Re: Elektro Helios TT1168 motor does not turn

no problem glad you got it sorted

also looking at the picture a couple of the other joints look like a future failures unless you did them all while you had it out

Dave

[yurtesen]

Re: Elektro Helios TT1168 motor does not turn

electrofix wrote:also looking at the picture a couple of the other joints look like a future failures unless you did them all while you had it out

Yes, it was funny because I was just at a friend’s place because his machine did not drain. Found a sock in the drain pipe (somehow it escaped the drum) and I came home and mine was broken same day…

I did not do anything to others ( based on the law of do not fix what is not broken 🙂 ). They looked fine, I think flash did something strange to picture… Here is a photo of the area from another angle, as you can see, everything is much more shinier than in previous picture. I will see about what to do if they get broken also…

[electrofix]

Re: Elektro Helios TT1168 motor does not turn

if you look at the arrows on the picture you can see the joints have a hair line crack. this means the solder joint was not heated properly in manufacture and will fail like the other one

at least you know where to look next time

Dave

[Author]

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