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Maytag Dishwasher MDB 6657MDB DEAD-NO LIGHTS


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3 replies to this topic

#1 Runner

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Posted 23 June 2011 - 02:44 PM

This unit died about a week ago. I have checked the following:
1. Verified incoming power present at wire nuts; tight & no scorching
2. Door Latches - both have continuity when latched
3. Found insulation cuts in 4 wires where wire bundle crosses into door; cut each, slid on shrink wrap, soldered each/shrink wrapped and verified end-to-end continuity on each
4. No scorching on circuit boards.
5. One contact loose on a component (large blue box) on the (PC?) board. Resoldered.

I reassembled and the machine did a full load, operating normally. It started a second load, then quit. No lights, no operation... dead again.

Thanks for the help!

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#2 RegUS_PatOff

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Posted 23 June 2011 - 03:41 PM

check for 120v AC at the Controller Board
Black
to
White wires
.

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

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#3 Runner

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Posted 12 July 2011 - 08:08 PM

Well, duh...

I removed the inner door panel to do the checks you suggested. There before my eyes were the wires for the door switches - not connected to the terminals! After the umpty-umpth removal and replacement of the panel and components inside, I forgot to connect them the last time around. I did, and the unit is fully operational again. It has run for three weeks with no further problems.

The takeaway is that the repair was resoldering the loose component on the PC board. The first time I did it, it was a half-hearted job, as I seriously doubted it would make a difference. When I disassembled the door components the final time (when I left the door switches unconnected), I redid the solder job with good lighting and made sure the connection was solid. That did the trick (after I reconnected the door switches).

The insulation cuts would have eventually caused problems, so being ahead of that one is a real benefit, too.

Another thing that I found (by fumble-fingering one of them), that the door switches can be opened up. One of them basically fell apart. It was pretty simple to reassemble and snap the case back together. I would open and inspect before replacing them if I suspected switch problems.

Even though I did not find specific mention of the loose component problem in previous posts, Appliantology gave me the knowledge that made the loose component and insulation cut repairs possible!

Many Thanks!

#4 RegUS_PatOff

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Posted 12 July 2011 - 08:46 PM

... I forgot to connect them the last time around.

:whistling:
.

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




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