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Meile W1926

No power

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9 replies to this topic

#1 bmwguru

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Posted 23 August 2012 - 03:31 PM

Have power to unit, have power at push button switch down to door sensor. No lights on display. Any common problems

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#2 Samurai Appliance Repair Man

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Posted 24 August 2012 - 02:06 PM

PMed you the service manual. Need to see if you're getting voltage clear up to the main control board. If you do, and no display, then the board is bad.

#3 bmwguru

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Posted 24 August 2012 - 03:08 PM

Do you know whitch terminal on plug 8 is the power up to the main control. Have installed new main control no difference, so probably power module #4622743 ?




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#4 Samurai Appliance Repair Man

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Posted 25 August 2012 - 06:58 AM

Do you have the schematic from the tech sheet in the washer?

#5 bmwguru

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Posted 25 August 2012 - 03:29 PM

Yes, it was taped inside the housing.

#6 Samurai Appliance Repair Man

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Posted 25 August 2012 - 03:47 PM

Please scan and post a nice, big legible copy here. Or, if you prefer, you can fax it to me at 866-315-4504.

#7 bmwguru

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Posted 25 August 2012 - 06:01 PM

Just faxed you the schematic for the W1926.

#8 Samurai Appliance Repair Man

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Posted 25 August 2012 - 06:57 PM

It's almost legible-- Miele diagrams use absurdly small font because their engineers must hate us techs. Fax it again but using the highest resolution setting on your fax machine.

#9 bmwguru

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Posted 25 August 2012 - 10:25 PM

Sorry, sent it again using the highest resolution setting on my fax machine.

Edited by bmwguru, 25 August 2012 - 10:26 PM.


#10 Samurai Appliance Repair Man

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Posted 26 August 2012 - 06:02 AM

Much better, thanks! Uploaded your faxed wiring diagram to the Downloads section, available here if others would like to see it ==> http://appliantology...gram-schematic/

Let's start by checking the inputs and outputs to the lower electronic board (the power board):

You should read 120 VAC at J1-4 and J1-3. J1 will be a 4-pin connector with biggish wires.

Also, with the ribbon cable disconnected from the upper board only but still connected to the lower board and the machine turned on, you should read 4-6 VDC between pins 9 and 10 (counting from left to right) and 25 to 33 VDC between pins 12 and 13.





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