Washing Machine PCB

[richy2201]

Hi,

 

The GF had informed me a few days ago that the washing machine wouldn't work after two power cuts. She phoned Electrolux Help and engineer came out saying the board inside had blown and would cost 5000 plus call out charge. Washing machine is 7 years old so not complaining as haven't had any probs with it and after some research it appears the quoted price is about right for new board and call out.

I haven't seen board yet to see how badly burnt it is but my question is if anyone has had similar problems and brought the actual board to someone (Chinatown? I've heard?) to see if the PCB is repairable?

 

Thanks for any advice in advance

[Lamkyong]

my machine had a similar problem a while ago problem solved firstly   by looking on you tube   plenty of info on several different models  located pcb took to local tv repair shop 3 capacitors later up and running   the board was not burnt out but did show signs of cap failure ie  domed/distorted  cases   worth a try   all for 60 bht  good luck  i think that machines with pcb incorporated within the control panel  are not easily repaired because the internals are coated in a resinous  coating   

[Crossy]

Our Samsung  inverter washer is on its third controller board, 8 grand a pop, non-repairable due to the resin coating as noted by Lamkyong

 

This despite having local surge suppression and unplugging the beast when not in use, last failure was during operation. Design weakness methinks.

[wayned]

1 hour ago, Crossy said:

Our Samsung  inverter washer is on its third controller board, 8 grand a pop, non-repairable due to the resin coating as noted by Lamkyong

 

This despite having local surge suppression and unplugging the beast when not in use, last failure was during operation. Design weakness methinks.

Actually conformal coated boards are  repairable.  There are many different types of conformal coating remover products designed to strip specific polymer materials from all types of electronic components. The trick is know exactly what the boards are coated with.  I worked in the aviation electronic industry and all of the circuit boards were confomal coated and all were repairable.  Having said that I wouldn't expect that the local washer repair guy would bveable to repair the board and it's much easier and profitable to say that they can't, here and any in any country!

[richy2201]

Thanks for all replies. I've found a website (Thai) that sells PCB replacements for washing machines. The one I need is 2,700 baht, so basically half the price. I might take a chance on this and see. Thanks again.

[Lamkyong]

please can you let us know the web site for future ref thanks

[richy2201]

Website is washingmachinehome. Com . The gf contacted them today and they have the PCB I need so will order tomorrow. Will let you know how it goes and hopefully this will be a positive recommendation for this website.

[Crossy]

@richy2201 nice find. Sadly they don't appear to do our Samsung part but could be useful for other members, do please report your buying experience.

[maxpower]

On 9/8/2017 at 0:52 PM, Crossy said:

Our Samsung  inverter washer is on its third controller board, 8 grand a pop, non-repairable due to the resin coating as noted by Lamkyong

 

This despite having local surge suppression and unplugging the beast when not in use, last failure was during operation. Design weakness methinks.

Would be interesting to know what area on those boards failed as they are normally quite robust.

[richy2201]

Hi, just to update for those that are interested. The spares I ordered are working in that the machine now is alive and operates, however the "cycle" doesn't work properly. Example, if I try a 40 degree wash, it will add water, spin and then pause itself through the cycle. Also, the water doesn't seem to heat up. After researching internet/YouTube etc I've tried to reset the machine but I can't find the exact model number (Electrolux EWF85761) to compare it to. My machine doesn't have LCD screen at front or any such panel, only the main 360 switch and 5 buttons for spin, start etc. Has anyone any ideas? Thanks in advance.

[RichCor]

12 minutes ago, richy2201 said:

Example, if I try a 40 degree wash, it will add water, spin and then pause itself through the cycle. Also, the water doesn't seem to heat up.

 

Has anyone any ideas?

It's possible more than the board was originally affected, and the replacement board sensor is waiting for the heating element to kick in.

 

So maybe get someone to check the heating element, or see if it has a separate fuse?

[maxpower]

5 hours ago, RichCor said:

It's possible more than the board was originally affected, and the replacement board sensor is waiting for the heating element to kick in.

 

So maybe get someone to check the heating element, or see if it has a separate fuse?

You could be correct. Electronic washers have many wait states but depending on model not all carry time out errors. The temperature is normally a monitored parameter with error codes but not always.

 

Manufacturers sometimes use the same PCB and change the program for model features. Fit a board with incorrect program code and it will do weird stuff.

[RichCor]

12 hours ago, richy2201 said:

The spares I ordered are working in that the machine now is alive and operates, however the "cycle" doesn't work properly. Example, if I try a 40 degree wash, it will add water, spin and then pause itself through the cycle. Also, the water doesn't seem to heat up.

Another good suggestion I ran across would be to check ALL the wiring harnesses. Unplug and replug all the socket connections (at both ends) to make sure everything is making connection. 

Besides fuses, look for any relays or triacs that might be used to control energizing the heating elements. 

 

 

I'll sometimes turn the water off at the machine. One of my washing machines will happily just sit there and wait at the fill cycle, never making a noise, while I wonder why it won't start. I think its logic circuit was programmed by a former Buddhist monk.