12 kitchenaid DW, dashboard goes out. Turn off breaker, then on, DW works. 8 times in 90 days. Serviced after the first several times. Nothing found. Ideas?

Sounds like your drain cycle is timing out might be something stuck in the motor

Double check that the float on the basin isn't stuck. It is mushroom shaped and inside the DW. Open the door, slide out the bottom rack, and look for it. Found it, great. Gently move it up and down a couple times. Does it move freely? Was it stuck? No? Ok Then lets try something else.

Call the manufacturer and ask them questions. If it is less that a year old, it is covered under basic warrantee. Do not delay.

Also check other common issues with DWs: Is their debris in air gap or in the bottom of the DW, where the drain is screened?

1. The air gap is usually located on top of the sink. Lift off the pretty cover, and unscrew the top cap nut. Is there rice and debris there? Remove it then. Reassemble and check it out.
2. The DW drains to the bottom of the unit where the pump is. This area is screened off so that the pump doesn't get clogging debris in it. is their leaf lettuce and stuff covering this? Remove that debris. Some times this area can only be accessed by removing the bottom spinning spray head. It comes off with a nut, possibly this nut is reverse thread. Reassemble when done looking for debris.
3. Is the drain line between the DW pump (located under the DW) and the waste pipe kinked? This line is a plastic corrugated line about 7/8" around the outside. It is a pumped waste and won't work if it is kinked, so unkink it.
4. Is the float stuck. This is a device on the bottom of your DW that tells the DW how much water is in the bottom of the DW basin. It looks like a mushroom. Gently move it up and down. Does it move freely or is it stuck? Unstick it.

Good luck.

Here's a link for the repair manual for your dishwasher:
http://www.appliancerepair.net/kitchenaid-dishwasher-repair.html
Concentration should be on Chapter 2 subsection 2-3 "No Fill"
Then go to Chapter 6; subsections 6-2, 6-3, 6-3a, 6-3b, 6-3c, and 6-3h for testing procedures on relays, actuator valves, etc.

The electronic control panel should be replaced and cost about $240. It is easy to remove and replaced --- pull and plug like a standard elect plug, only its flat.

This definitely works.

Don't know if this will help, but when I had problems with my control panel (lights blinked and nothing worked) I fixed it by disconnecting the power completly from the dishwasher at the fuse box. Leave it off 10 or 15 minutes and then repower. That reset mine and it worked again...has happened several times and each time I could fix it by cutting the power. If that doesn't work, you may need a new control panel.

sounds like either a control board issue or a keypad issue.. if you turn he power off and turn it back on and it works for a min then the fuse is fine..

Removed power line from panel board # 11 as seen in appliance parts pros and shocked the board. It came to life and completed a cycle nominally. Then it died again. Tried to shock it again and sometimes it works but most times it doesn/t. Similar posts indicate a transistor failure in the board assembly. The board is easy to replace and costs about 90$. I'm replacing mine. Turn off power. Remove #15 torx screws (6) from the upper cover and lean panel forward. Remove board power . Diagram where connectors go back. Board is held in with 6 clips. Gently push clips open on one side and tilt board to remove board and ribbon cable. Reverse installation.

first see the fuse it it is dead replace it
nor take out the plug from the switch it is connected

Microwaves that are either built in, a part of the oven, or over the range are on a dedicated circuit by law. This means nothing else could have tripped that breaker but the microwave.
If it has a problem severe enough to trip a 20 amp breaker several times, it is only getting worse each time you reset the breaker and turn it on.
There is a possible chance of fire. I recommend you turn the circuit breaker off and replace the microwave. Is it a plug in, or over the range type?

Your drive motor arm is not making contact with either of the two limit switches at 6 and 12 positions. Your arm may be loose, gear stripped, broken bracket. Turn off the power at the breaker panel and remove the vent pipe cover box (4 nuts) see what is going on inside. Tellstar