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maytag dishwasher MDBH979SAM /on 3rd cntl. bd.


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12 replies to this topic

#1 vunger1

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Posted 11 December 2012 - 11:10 AM

This dishwasher is on 3rd cntl. bd. in 1 year what can cause the boards to go out? Should there be some type of cntl. bd. installed ? Is this a common problem? Thanks in advance.



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#2 vunger1

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Posted 11 December 2012 - 11:13 AM

mdbh979sam is correct model.



#3 jumptrout

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Posted 11 December 2012 - 01:32 PM

Do you know what on the board is failing?
Do you get any error codes?
Is the ground wire connected in the wire terminal box for incoming power?

Is the polarity correct on incoming power? White to white/Black to black?



#4 vunger1

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Posted 11 December 2012 - 03:39 PM

i have not been to the job,it is a warranty call through Assurant. But the home owner told me the board was replaced 1 time under the Maytag warranty and 1 time under the extended warranty.This will be the 3rd time. My understanding is that there is no power to the board , no lights, nothing.(user interface) Customer said board was replaced twice and this fixes the problem for a 4 or 5 months.They are concerned that their warranty will run out and that they will need a board again in the future , but not know why.



#5 Samurai Appliance Repair Man

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Posted 11 December 2012 - 09:29 PM

Loose connections at the power wires in the junction box will take out a control board.  Very common problem in Dacor ranges, especially with the range's copper L1 tied into aluminum house wire -- same basic set up here: loose connections cause arcing and cause excessive current draw across the power relay contacts.  But doesn't need to be a copper-aluminum mismatch-- a loose wire nut connection will have the same effect.



#6 RegUS_PatOff

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Posted 11 December 2012 - 10:26 PM

lives out in the middle-of-nowhere ?

on a farm, etc. ?


.

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#7 vunger1

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Posted 18 December 2012 - 05:51 PM

lives out in the middle-of-nowhere ?

on a farm, etc. ?

lives in quiet neighborhood , where folks perty much keep to themselfs (you thinkin somebody might be tamperin wit da lectric round ere) /bout 10 howses if memry serves me crect? Dont rekn they ever hadn eny trouble , even though it aint exactly farm country :confused:



#8 RegUS_PatOff

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Posted 18 December 2012 - 07:10 PM

... (you thinkin somebody might be tamperin wit da lectric round ere)

I was thinkin' if there were "spikes" on the power line..

from the electric company OR lightnin'...

the spikes would be dissapated by only a few "loads"


.

one of my video productions: “Easter Seals: Walk With Me”

every day is Down Syndrome Awareness Day
"A Child Is Waiting" . Burt Lancaster . Judy Garland . 1962

RegUS_PatOff > www.youtube.com/watch?v=oPAY2LsKVEw

#9 kdog

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Posted 18 December 2012 - 07:46 PM

Or

 


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#10 RegUS_PatOff

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Posted 18 December 2012 - 08:11 PM

after viewing the comparison of his two electric bills,

I like the comment from MrBoogerhook 2 months ago

"I think you just turned off your growing lights for a month !"


.

one of my video productions: “Easter Seals: Walk With Me”

every day is Down Syndrome Awareness Day
"A Child Is Waiting" . Burt Lancaster . Judy Garland . 1962

RegUS_PatOff > www.youtube.com/watch?v=oPAY2LsKVEw

#11 vunger1

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Posted 19 December 2012 - 08:35 AM

After going out on this service call, i found , a bad non-resettable fuse on the cntl. bd. ,jumpered the fuse for a quick test and lights came on, and i initiated a drain cycle , to empty the unit. I will replace the fuse and do some trouble shooting to see why the fuse went out in the first place.

 This unit had a lot of food particles in it,(bad prerinse job) and appeared to be heavily used and poorly maintained. Upon my return I am thinking of checking the drain pump/hose-food chopper area,filter.....I am thinking some obstruction causing a long drain/pump run time,maybe something actually obstructing the food chopper blades, keeping the motor from turning???? 

 

  Are there some common problems that cause the fuse to blow ???

 

 

LOL on the video, I would definitely call that tampering!



#12 Samurai Appliance Repair Man

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Posted 19 December 2012 - 09:06 AM

Make sure you use ALL the components in the kit and follow the instructions. If you just plug in the new fuse without installing the rest of the kit, you'll be back in a month or less.

#13 vunger1

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Posted 19 December 2012 - 09:43 AM

Oh yeah, upon checking the connections at the terminal box,the white wire pulled out of the wire nut with very little force. So i tightened up both wires/wire nuts, which were copper/house-to-aluminum/dishwasher.

   I wil try to get a pic of the wiring in the house, it comes through the floor , straight under the dish washer, you have to slide the dishwasher frame over the romex(super tight fit,like you might cut the wire with the frame and cause a short tight)to get the unit under the counter. Actually 2 runs of romex come through the floor in the same hole, one for the dishwasher and one for the outlet located on the outer wall of this island in the kitchen.(same island where dishwasher is installed)






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