Siemens Washer/Dryer Controller Dead?

[Alan Carter]

My Siemens Washer/Dryer Model WD12D520GB/03 has stopped working:
The display panel background lights up orange as usual, but none of the icons appear
None of the mode selection lights come on
None of the selection buttons beep, including the Start/Pause button
Moving the programme selector knob has no effect in any position
I suspect the controller may have died, but after reading the advice on this site I’m aware this is often not the true cause of problems.
Does anyone recognise this set of symptoms?
Any suggestions for things to check first before blaming the controller?
Any advice much appreciated,
Alan

[electrofix]

well its a long shot but i would find and disconnect the heater element for the dryer. then try to see if anything has changed

Dave

[andyjawa]

Or disconnect the wash element wires. on a lot of this modern stuff if a heater goes to earth the trip often does not cut the circuit but what it does do is back feeds through the pcb resistors and temorarily scrambles the pcb digital display ( e/lux / zanussi w/dryer are infamous for it, bit of a long shot for your Bosch / Siemens but could well be that too ). So if you disconnect the dryer heater ( about 70 quid ) and then try the machine. If still no joy try disconnecting the wash element ( about 60 quid ) and then see if the display comes back. If none of those 2 things give pointers you might be then in the realms of pcb user board failure, a £130 / £140 board which is too much to start playing guessing games so my advice is don`t and you`ll just have to call out Siemens and pay through the nose since any pcb an independent repairer buys that does not cure the problem he`ll be stuck with the new board forever and so would you as non returnable parts, be warned.

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