Nikkei Nk Lb65E09 misworking with pictures and videos

[axxo1]

Hello.
My first language is not English, please bear with me.
I don’t know if I am going to find the problem here but let me tell you that this forum is awesome anyway. There should be more like it. Here it goes.

I have a Nikkei NK LB65E09.
It has max 4 years (2009 label inside)
It has known long periods of inactivity in a humid environment (80{e5d1b7155a01ef1f3b9c9968eaba33524ee81600d00d4be2b4d93ac2e58cec2d}) and only recently it’s being used regularly.

It is level (I cleaned the floor and adjusted its feet) it does not lean to any side trying to shake it.

The belt is in tension and does not slip off.
Th engine turns with my hand and the brushes are still quite long.

I have studied the symptoms which are:
No suspicious noises apart from the blows (see below).

Centrifuge program with empty basket:
It does the first round almost normally but it seems short and weak.
The washing machine does not walk.
The following rounds, it tries to start (starting noise) and there is a tiny movement of the basket but it stops immediately. And so on till the end.

Centrifuge program with half or full basket:
It does the first round almost normally but it seems short and weak.
The tub inside hits left and right and the washing machine starts walking. The more I fill the basket the worse it gets.
The following rounds, it tries to start (starting noise) and there is a tiny movement of the basket but it stops immediately. And so on till the end.

40° cotton program with empty or full basket:
Water gets in at the start and goes out at the end normally.
Rounds seem normal (2 or 3 rotations) but they seem short and weak.
Unfortunately I don’t know what a normal round is supposed to be (how many rotations)
After draining the water it doesn’t centrifuge.

I add 4 videos to help with the diagnosis.
The first round is at the beginning of each video, the second (which represents all the rounds that follow) is at the end.

Centrifuge program without belt
https://www.youtube.com/watch?v=J5CewEn7r3c

Centrifuge program with belt (towel and t-shirt inside)
https://www.youtube.com/watch?v=w1qMawHoIn0

40° cotton program without belt
https://www.youtube.com/watch?v=fUxLXp9SlEw

40° cotton program with belt (towel and t-shirt inside)
https://www.youtube.com/watch?v=kCdNh0_Ca-w

Pictures of the engine and of its brushes:
Side A http://i.imgur.com/smlIBBr.jpg
Side B http://i.imgur.com/R46sHeF.jpg
Side C http://i.imgur.com/dyNH2gz.jpg
Side D http://i.imgur.com/bnRYUy8.jpg
Brushes http://i.imgur.com/tDaQdYT.jpg

A look inside:
1 http://i.imgur.com/QaXQ9un.jpg
2 http://i.imgur.com/hbmiP1I.jpg
3 http://i.imgur.com/8SBjUVO.jpg
I wonder if the black mèches are normal.

[madangler1]

Re: Nikkei Nk Lb65E09 misworking with pictures and videos

Looks like a tacho related fault to me. The motor speed it not regulated. I would check all connections first and the motor wiring for continuity . Check the tacho on the motor and if no joy I’d suspect control board failure

[axxo1]

Re: Nikkei Nk Lb65E09 misworking with pictures and videos

madangler1 wrote:Looks like a tacho related fault to me. The motor speed it not regulated. I would check all connections first and the motor wiring for continuity . Check the tacho on the motor and if no joy I’d suspect control board failure

Thank you so much Sir!

I have opened the tacho and I have taken two pictures.
http://i.imgur.com/mI7bM4u.jpg
http://i.imgur.com/q8kavZz.jpg

To a layman’s eye such as mine nothing appears to be amiss with it.

Is there any (possibly easy) way I can check for wiring continuity?

[admin]

Re: Nikkei Nk Lb65E09 misworking with pictures and videos

Hi

Can you post a picture of the rating label ? and of the front of the machine with the control panel ?

Bryan

[axxo1]

Re: Nikkei Nk Lb65E09 misworking with pictures and videos

Hi r600,

http://i.imgur.com/0pRahC6.jpg
http://i.imgur.com/fyzldH6.jpg
http://i.imgur.com/QUzQMde.jpg

Thanks for chipping in.

[Martin]

Re: Nikkei Nk Lb65E09 misworking with pictures and videos

madangler1 wrote:Looks like a tacho related fault to me. The motor speed it not regulated. I would check all connections first and the motor wiring for continuity . Check the tacho on the motor and if no joy I’d suspect control board failure

I totally agree. 😀

[admin]

Re: Nikkei Nk Lb65E09 misworking with pictures and videos

Hi

It will be either the tachometer which the manufacturer in Italy May be able to supply separately to the motor or a complete motor. Distributor has a web site but not a lot of help as it’s not helpfull

Bryan

[axxo1]

Re: Nikkei Nk Lb65E09 misworking with pictures and videos

Thanks for the help r600.

God I hope it’s the tachometer. 🙁 🙁

I am going to buy a multimeter tomorrow but where do I put the probes?
Can I do like him (minute 2:34) https://www.youtube.com/watch?v=D5Aw7CBEGPI#t=02m34s
but I have no idea what reading should I get.

With that moonwalk it did the other day with full basket it would me a miracle if something else didn’t break in the meantime.

Pray for me.

[axxo1]

Re: Nikkei Nk Lb65E09 misworking with pictures and videos

OK this is what I have done:

1)
I have set the multimeter to 200 ohm.
Multimeter shows “1” on display.

2)
http://i.imgur.com/RINsnJq.jpg
Started with other 2 couples of cables you can see in the picture
There is a cable (first from top) which has 2 colours (yellow and green) but it seems to be all by itself… ? I ignored that one.

1st couple (small black one & blue one) display shows 02.7
2nd couple (big black one & white one) display shows 04.7
3rd couple (yellow one & yellow one – tacho coil) display shows 1 !!!

I was very happy when I saw that “1”… but I’ll wait your more professional judgement before I start celebrating! Did I finally find the problem?

[Martin]

Re: Nikkei Nk Lb65E09 misworking with pictures and videos

axxo1 wrote:1)
I have set the multimeter to 200 ohm.

That is incorrect, you need to set it on Kohms

axxo1 wrote:3rd couple (yellow one & yellow one – tacho coil) display shows 1 !

Now test it again on the Kohms scale this time, what’s the reading now?

[axxo1]

Re: Nikkei Nk Lb65E09 misworking with pictures and videos

Hi Martin,
Which one do you mean?
2M,200k,20k,2k?

[lee8]

Re: Nikkei Nk Lb65E09 misworking with pictures and videos

Your motor looks new, your history would suggest it has hardly been used. I’d be surprised if your motor is faulty. Reading your history I’d be lookin at your motor’s control, pcb’s can be affected by moisture, likely that is causing incorrect interpretation of readings from the motors tacho.

The motor also looks like a Beko one.

[Martin]

Re: Nikkei Nk Lb65E09 misworking with pictures and videos

axxo1 wrote:Hi Martin,
Which one do you mean?
2M,200k,20k,2k?

20k. 😀

[axxo1]

Re: Nikkei Nk Lb65E09 misworking with pictures and videos

Thanks!

No matter what ohms setting I use (2M, 200k, 20k, 2k, 200) tacho coil circuit always returns “1” whereas the other circuits return either 0 or anything below 1.

From what I understand:
1 = max resistance = open circuit eg. probes touch nothing)
0 = min resistance = closed circuit eg. probes touch each other (might be near 0)

There is definitely something wrong with it and I will buy a replacement (I have to find out from where first)

I was worried I would have to change motor or pcb but I read around tacho coil is very cheap, so I am 🙂

I hope there is nothing else broken of course, but that would be really bad luck!
I will keep you updated!

[Martin]

Re: Nikkei Nk Lb65E09 misworking with pictures and videos

Yes it sounds as thought the tacho coil is at fault.

[Author]

Posts