[David F]

A relative has the subject model, the only responses we can get from it are the 'Heavy Wash' and 'Quick Rinse' buttons will light up when pressed. Nothing else will 'light up' and no other mechanical and/or electrical response appears to take place.
Any suggestions for trouble shooting please. A shop manual for it, or its Whirlpool cousin, would also be appreciated.
Thank you.

[denman]

Here are your parts
Replacement parts for Kenmore 66513692K600 | AppliancePartsPros.com

See the attachment for the tech sheet.

Have you tried removing power from the unit for a couple minutes to see if it will reset?

The usual way to troubleshoot is to check the output from the control panel with a meter. If it checks out OK then replace the control board. Still a bit of a crap shoot but your odds are better.

I would try the following.
Connector Cleaning / Checking
Unplug the unit
Open it up
Remove the ribbon cable from the keypad to the control board at the control board.
Clean the edge connector. Use electronics contact cleaner or isopropyl alcohol.
If it is the type where there is not a connector just the insulation is removed, it can be cleaned with a pencil eraser. Do not use an ink eraser as it is too abrasive.
Check the tracks in the ribbon cable for hairline cracks. A magnifying glass helps here.
Would not hurt to clean the connector on the board. Use electronics contact cleaner or isopropyl alcohol and a tooth brush. Be gentle and do not reconnect till all the solvent evaporates.
Reconnect everything and give it a try.

[David F]

Thanks denman a great help, particularly the tech sheet. I got round to checking and cleaning 'it' yesterday.
Cannot get anything from the from the keypad so 'suspect' that. Will get prices for keypad and control board today, we live in Canada so Appliance Parts Pros are no good to us. Then let relative know her options, after that it is up to her.
Thanks again