Smeg DWI612C Possible PCB fault

[Gozaradio]

I know this dishwasher pops up regularly on this forum but I have reached a point where I need to decide whether to pursue the repair or buy a new machine.

It had the common fault of two short beeps followed by a brief burst of the pump, pause, then repeat. This contiued until the machine was switched off. No fault code was presented throught the LEDs.

I reset the PCB using the method of pressing the program button 3 or 4 times before any LEDs appear when powering on. This made no difference.

After reading the now infamous article about the common faults of the machine and upon testing, found that the solenoid on the soap dispenser was open circuit, so I ordered a new one.

The same fault still presents but this time, the solenoid is working but it opens the soap dispenser upon starting the program (which it shouldn’t do).

This all leads to my suspicion of the PCB but I have scoured it and found no physical evidence of damage. No dry joints, no scorch marks, etc.

Before I send it off to QER for examination and probable “no fault found” or unable to repair, is there anything else I am missing?

The inlet solenoid and mains suppressor at the rear of the machine are both in working order.

Here are a couple of pics of my PCB:

Thanks in advance for any help.

Gozaradio

[Penguin45]

Re: Smeg DWI612C Possible PCB fault

A regular pulse from the drain pump and no other action is always a pcb fault.

As one of the authors of The Article, I’m surprised that it should be considered “infamous”. All we have doen is put the information into the public domain.

Penguin45.

[TVRJOHN]

Re: Smeg DWI612C Possible PCB fault

I have read this post with great interest as i am in the same dilemma,
see my previuos post lights 4 + 5 on, and pulsing drain pump, cannot reset.

Have had a good look at the PCB, can see no visible burnt tracks etc, and i am wondering about replacing the Dishwasher or sending the PCB to QER.

What do you think my course of action should now be ?

[Penguin45]

Re: Smeg DWI612C Possible PCB fault

Don’t know if QER do “no fault, no fee” for the public – got to be cheaper than paying out for a new pcb at this point. Do take on board the “cause and effect” elements of the article, though. A reconditioned board will not last long if it’s been corrupted by an underlying fault.

Penguin45.

[TVRJOHN]

Re: Smeg DWI612C Possible PCB fault

GOZARADIO, Did you manage to sort your problem, as i would be interested to know what the solution was.

Even if mine does beep and pulse the drain pump, but lights 4 + 5 are permanently lit.

Just about to send PCB to QER for test / repair

[Gozaradio]

Re: Smeg DWI612C Possible PCB fault

Penguin45 wrote:
As one of the authors of The Article, I’m surprised that it should be considered “infamous”. All we have doen is put the information into the public domain.

Penguin45.

Perhaps ‘infamous’ was the wrong word; what I meant was that in my research on this very forum, almost every post I read about this dishwasher ended up with them being directed to the article.

It has been most useful and helped me diagnose the faults so far, so thanks very much for creating it!

[Gozaradio]

Re: Smeg DWI612C Possible PCB fault

TVRJOHN wrote:GOZARADIO, Did you manage to sort your problem, as i would be interested to know what the solution was.

Even if mine does beep and pulse the drain pump, but lights 4 + 5 are permanently lit.

Just about to send PCB to QER for test / repair

I sent the board to QER on Friday, will await its return. I’d be interested to know what the fault is. I asked them beforehand if there were specific faults that they couldn’t repair. They were suitably vague but reckoned they could deal with almost anything. As I had already bought the soap dispenser, I’m now of a mind that ‘in for a penny…’

One difference between your machine and mine is that I have no fault codes showing.

If QER can’t fix the PCB, it will have been best part fof £90 up the swanny between the new soap dispenser and QER repair.
Plus I’ll then have to fork out for a new Dishwasher which I could have done a month ago when it first packed in!

This will of course, lead to the question of which brand to go for. But one step at a time…

[TVRJOHN]

Re: Smeg DWI612C Possible PCB fault

Thanks for the update Gozaradio, am just parceling up my PCB to send to QER tomorrow.

We shall both see what they have to say

[Penguin45]

Re: Smeg DWI612C Possible PCB fault

Make sure you include a FULL DESCRIPTION of the problems being encountered.

Penguin45.

[Gozaradio]

Re: Smeg DWI612C Possible PCB fault

TVRJOHN wrote:Thanks for the update Gozaradio, am just parceling up my PCB to send to QER tomorrow.

We shall both see what they have to say

Well, the board arrived back today, seven days from when I posted it so not too bad. According to the report, one of the components (looks like a relay?) was damaged by the faulty solenoid in the soap dispenser and has been replaced.

I replaced into the dishwasher with some trepidation, fired it up and…. it works! Just putting it through an empty cycle now to clean it out (stinks after 6 weeks of non use).

So, a hundred notes lighter (£40 for soap dispenser from UK Whitegoods, £52.86 for PCB repair and £6 special delivery to send it to QER), I now have a working dishwasher. Less than every other option availabe to me but still not cheap! I have found new equivalents of this dishwasher around for £300 so if it goes again, I think it will be a new one for me

Only thing I’m wary of; QER state that if the same problem happens due to en external component damaging the board, it wouldn’t come under their repair warranty.

Good luck with yours, TVRJOHN

[TVRJOHN]

Re: Smeg DWI612C Possible PCB fault

Gozaradio
thanks for the feedback and pleased to here your machine is up and running, i myself received a tel call from QER today, said PCB was ok but several components were not within the allowable working spec, not sure what that meant, however new components fitted and satisfactorily tested as OK.
£41.23 paid and PCB will be back with me shortly, we shall see if it sorts my problem

John

[sdancer75]

Re: Smeg DWI612C Possible PCB fault

It seems that the “infamous article” does not exists any more. Any change to read it somewhere ?

Regards,

[kwatt]

Re: Smeg DWI612C Possible PCB fault

Link fixed, sorry, changed all the site a week ago or so and a few ancient links have dropped off.

You may need this one as well:

http://www.ukwhitegoods.co.uk/help/faul … sher-error

K.

[Gozaradio]

Re: Smeg DWI612C Possible PCB fault

Wow, had an alert about a new post on this thread. For what it’s worth, I still have the same dishwasher working hard every day, 6 years on from the repair.

About once a week, it stops working a short time after starting but a quick PCB reset solves the problem. I keep waiting for it to keel over but it’s still going strong.

[sdancer75]

Re: Smeg DWI612C Possible PCB fault

I have a similar PCB in my siltal BL952 (compatible with ADP 8242 and many other models). My problem is no heating at all. After all tests I did I concluded that my PCB is fault. Relay it works fine as well as all of the PNP transistors, diodes and resistances.

I read in 2-3 forums (espacially in russian and bulgarian forums) that the problem was the three gray box capacitors. Especially the big one with 1.5 uF /270 VAC at the bottom left of the photo.

I ordered all of them and I am still wait to replace them. As soon as I have any news I will let you know.

I also opened a topic at this address when my tests where in the very beggining.

dishwasher-forum/adp-8242-dishwasher-heat-water-t88953.html

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