Blomberg 1501AAA Spin failure

[admin]

Re: Spin failure

Hi Phil fish
Yeah the blk tube was clear and I can only guess that the timer board is ok as the timer rotates and wants to operate the valves etc. The pump is workingbut I didn’t want to put any water in just in case it didn’t empty also as the door lock is not working I can open the door so I didn’t want to flood the floor as wife would get upset.

Roy

[Penguin45]

Sorry for the delay Roy, been pondering this one a little bit. It does rather come down to the timer/module unit. Philfish’s point is interesting, although I confess that I haven’t come across it – if the machine were still operating in that condition it points more to an earth problem (the earth and neutral ultimately join).

I would suspect from what you are describing that there is no supply from the timer unit to the door interlock. Are you certain that when soldering up the damage that all contacts were rejoined fully? Regrettably, if the original interlock went with a bang, it is entirely possible that this has flashed back to the processor and it no longer signals the lock to energise. Tricky one. If you can prove the supply (or lack of it) to the lock we can move closer to an answer.

Philfish’s comment that the timer unit is expensive is true – however there are one or two cheaper solutions if it comes to it.

Regards,
Penguin45.

[admin]

Re: Blomberg 1501AAA Spin failure

Hi Penguin45
Just tried the washer again and from start the timer rotates depending on the setting ie. spin etc and comes to a finish.
The solenoids for the water do not appear to be operating so no water into the drum.
The door lock indication is operating be it intermittently and I think i have found all the missing tracks and either jumpered it or re soldered it.
What do you have in mind regards cheaper options I do know how to use a soldering iron on the board if thats what you are meaning?
What voltage will be on the terms of the lock (mains to earth I presume) as I take it that its a solenoid operation to inhibit the door opening.
Roy

[Penguin45]

Ok Roy,
I had a horrible thought about this – the PCB is double sided…… BTW apart from the digital section on the PCB, everything is at mains voltage.

Everything is pointing to a failure of the logic circuitry – ie, the door won’t lock if the computer doesn’t tell it to.

As mentioned earlier, a control unit is likely to be an arm and both legs and can be the difference between the machine being repaired and scrapped.

The alternative is to contact :-
QER – 01900 67913
EMW – 01623 634200

They can repair most of these units for significantly less than a new replacement – QER used to offer a test service.

You will need to find the timer numbers on the label to get an exact quotation.

Luck,
Penguin45.

[admin]

Re: Blomberg 1501AAA Spin failure

Hi all
Just to let you know I got the timer board repaired at QER and fitted it. I took it to them and at mid day and they phoned me at 9am to say it was ready for collection so good service cost £58 which is better than new board of £140.
The machine is now almost working fully apart from it pauses on the rinse cycle and the fabric con aint going so am I right in thinking its the cold water solenoid. I’ve checked both taps are on but maybe summat has been disturbed when replacing the board any other ideas?

Roy

[Penguin45]

You have turned the cold water back on, Roy… Those little plastic levers don’t always do the job! Next thing is to placement of all those little edge connectors – theoretically they can only fit one way, but life ain’t always like that.

The solenoid coils should give a reading of 3.5 – 4 Kohms when out of circuit, so check that as well.

Remember the plug – we don’t want any infortunate accidents.

Regards,
Penguin45.

[admin]

Re: Blomberg 1501AAA Spin failure

Hi Penguin
Yeah I did turn on the water treble checked. Ill check the res of the solenoid & trace back the wires if possible as I expect they will go back to the timer board eventually. Could always change over the hot solenoid and use cold fill but use more electric I suppose.
Yes I will pull the plug as its safety 1st.
How much is a solenoid & does it have to be for this machine?

Roy

[admin]

Re: Blomberg 1501AAA Spin failure

Hi Penguin/all
Checked all 3 cold water solenoids & found to be 3.6K ohmns, 2 operate ok but the final 2 fills for the conditioner don’t operate off the 3rd solenoid. Checked all resistances from soldered joints on the timer board so getting connection. Dont wanna try measuring voltage to solenoids does it sound like the board is still goosed on one of the solenoid outputs.
If I fill the machine by hand on the 2 rinses the prog finishes correctly ie level switch is still working ok.
Any other thoughts?

Roy

[admin]

Re: Blomberg 1501AAA Spin failure

Hi Penguin & all the crew
The final saga of the spin failure.
I took the board back to QER and the manager himself checked it against a spare (repaired one they had with the same tracks blown) & there was a fault across the timer contacts which they couldn’t fix so he sent it away to a specialist firm they have.
It has just come back and I have installed it in the machine & all is now working correctly.
Thanks very much for your expertise on tracing the fault (especially Penguin) & for putting me in touch with Dave for the door lock & QER.
I don’t know exactly what the faults on the board were (except for blown tracks) as he wouldn’t say.
Once again thanks very much for all your efforts & time I did mention UKW a few times to them as the source of my information.

Thanks
Roy

[Penguin45]

Nice one Roy – result.

Regards,
Penguin45.

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