ISE W288 eco No Power

[AndyMunn]

As the title says, I have an ISE W288 eco Washing Machine. It is five years old and as ISE has folded it no longer has it 10 yr free parts and labour guarantee.

The other day I put a wash on, it got to the rinse cycle and then stopped. No power, No lights, nothing. I have checked the fuse and the plug socket and have opened up the machine and put a circuit tester across the mains input and power is getting as far as the control module. I have tested the on off switch for continuity and it is working.

There is a circuit diagram that came with the machine that shows the the resistance of all the parts in the machine, Pumps, motor, heating element and so on. I have tested all of them and they all fall within the tolerance of resistance as shown on the document.

The machine is in Very good condition, is kept clean and has not been over used as I live by myself. I cannot detect any shorts or any signs component failure, apart from the obvious lack of power.

I heave read all of the advise about misdiagnosed control modules and have been in conversation with Andy at white goods help forum, he told me to try you.

I am staring to think that the problem could actually be the control module rather than anything else. It is a well built machine and It would be against my conscience to send it to land fill and buy another machine instead of spending £200 plus on a new control module.

Any thoughts would be appreciated…….

[electrofix]

Re: ISE W288 eco No Power

when you say you have checked power to the module is that live and neutral ?

a lot of people check for live and forget it wont work without neutral as well. if the neutral going to the board is faulty it will read as a live

Dave

[AndyMunn]

Re: ISE W288 eco No Power

Hi Dave, yes both live and neutral have continuity and power is going to the control module. Power is leaving the control module and on to the MCU but not returning as that circuit is not switched to on by the control module. The module itself does not light up the display or respond when the switch is on.

[electrofix]

Re: ISE W288 eco No Power

there will be a power supply on the board somewhere to bring the voltage down to 12 volts or so. that may have failed
it can be done in various ways but would have to see clear pictures of the board to work it out ( not seen many of these machines to work on so cant remember )

Dave

[iadom]

Re: ISE W288 eco No Power

I have had the exact same module failure on 3 of these machines sad to say. 🙁

[AndyMunn]

Re: ISE W288 eco No Power

Yes, power comes in through connectors 3-4 then through the large caps and resistor and on to a separate PCB with the power switch and components that drop the power to a 16v and 5v supply and back to the main PCB. I’ve done a search online to see if the smaller PCB can be got hold of but with no luck and I’m not sure about testing and replacing components on this, especially the surface mounted stuff.

[AndyMunn]

Re: ISE W288 eco No Power

Hi iadom,
Would I be right in thinking you had to replace the whole module?

[iadom]

Re: ISE W288 eco No Power

Well I would have had to do if the customers had agreed to foot the bill, sadly no takers.
Also know of one or two other engineers on here with this fault, at least one did replace the pcb to cure the fault.

[AndyMunn]

Re: ISE W288 eco No Power

Yep, I’m starting to think that would be my option. I resent the idea of trashing the whole machine and getting an new one, especially after what it cost in the first place.
Other than this fault it’s a good machine.

[electrofix]

Re: ISE W288 eco No Power

components on the small board are the power supply
red arrow top picture is a power converter chip changes 300vdc (dangerous) to I assume 16v dc

yellow arrow I assume will be a regulator chip to change 16vdc to 5 vdc

if either of these voltages are not there the board will not work

from second picture. on the plug it shows 16V. I cant see what the others are labelled but you need to measure these voltages to see if they are there or not

if it can be done safely.

you could ask one of the module repair companies if they are prepared to check the DC power side of the board

http://www.qer.biz/servReps.htm

Dave

[AndyMunn]

Re: ISE W288 eco No Power

Thanks Dave,

It looks as if the problem is with the main board as there is no power getting from the main board to the smaller one. I will try the link you gave me. thanks for your help.

Andy

[electrofix]

Re: ISE W288 eco No Power

what they normally do is put a low value resistor (under 100 ohms ) in series with the supply to the reg chip. if the chip fails all that will happen is the resistor fails

that resistor will be on the bigger board. if you find that and its popped then its a good chance the board can be fixed

Dave

[AndyMunn]

Re: ISE W288 eco No Power

Hi Dave,

Yes you were right, I found that the 1w? resister on the main board just before the cable that runs to the smaller board has popped. It’s a little tricky making out the value due to discolouration but it is low. Also not quite sure of what type of resistor it is, carbon film, metal film or metal oxide.

Would you suspect both converter and regulator chips have gone?

Andy

[electrofix]

Re: ISE W288 eco No Power

will be just converter (7 leg chip) and resistor.

with a bit of luck change both and it will work

Dave

[AndyMunn]

Re: ISE W288 eco No Power

Cheers, I will give it a go about the resistor, do you think it’s carbon film, metal film or metal oxide a bit hard to tell and not sure if it’s 1/2w or 1w….

Andy

[Author]

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