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- > Do-It-Yourself Appliance Repair Help > The Kitchen Appliance Repair Forum > KitchenAid KGRT607HBS9 Control Panel won't work.

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KitchenAid KGRT607HBS9 Control Panel won't work.  Rating:  Rating
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 Posted: Sat Apr 3rd, 2010 03:43 am
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craigman
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Last week my wife accidentally dropped a large glass bottle of Kikoman soy sauce on our KitchenAid range control panel.  The glass control panel shattered, but it was still functional.  I found a replacement part and ordered it that day, putting clear 3M tape on the glass so we wouldn't cut ourselves while using it in the meantime.

The replacement panel came in today, and when I tried to install it, it wouldn't light up.  I tried re-connecting the two wire leads to the board (the board is not new - it had to be removed from the broken control panel), and after several failed attempts, I decided to reconnect the old, broken panel to see where I'd gone wrong.

Well, I couldn't get the old control panel to work either.  I've bounced back and forth between the two, and I'm getting no response from either.  I'm concerned that I may have burned the board that piggybacks onto the control panel itself.  Which is weird, because I'm measuring voltage across all the connectors.

Two things: I (absentmindedly) did not unplug the range before replacing the range.  I heard a very soft tone coming from the board before I disconnected it.  This is the board that was working at the time.  It was not coming from the piezo speaker.  I haven't heard it since.

Thoughts?

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 Posted: Sat Apr 3rd, 2010 04:22 am
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appl.tech.29501
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so you ordered just the front and installed the old display board correct? the display board is probably toast. and yes, you should have unplugged the range before performing this repair.



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 Posted: Sat Apr 3rd, 2010 01:47 pm
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RegUS_PatOff
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what's the part number of what was replaced ?

KGRT607HBS9 Tech Sheets



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 Posted: Sat Apr 3rd, 2010 04:30 pm
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craigman
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The part number is  9782418CB.  It can be viewed here

The part replaced is the glass control surface and sensor only.  The display board is indeed the old board, which piggybacks onto the control surface.  The display board was functioning properly before I removed the old control surface.

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 Posted: Sat Apr 3rd, 2010 07:07 pm
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RegUS_PatOff
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and the Ribbon Cables are correctly installed and "locked" ?



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 Posted: Sat Apr 3rd, 2010 07:59 pm
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craigman
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Yes.  I've done a lot of work with hard drives and other computer parts that have similar ribbon-style connectors, so working with these is like reading a large-print book by comparison.

There is a main power supply connector (P1), with a purple and a red wire that attaches to the control panel/display circuit board.  Should this carry a load when the control panel/display board is not connected?  I'm beginning to wonder about the remaining circuitry of the system.  It delivers a load when everything is connected, but when not connected, it's completely open.

Additionally, the internal oven light will not go on when the door is opened.

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 Posted: Thu May 20th, 2010 10:02 pm
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craigman
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Well, I'm back.  I've replaced the touch panel and the underlying control panel.  I've also replaced the power supply board on the lower right-hand side of the unit.  It power up and the control panel functions as it should unless I actually try to warm the stove. 

I'm getting an E1:F3 error which, according to the service manual (and thanks for that, PatOff), is a config error.  This stove appears to be a free-standing hidden-bake stove.  According to the service manual, there should be no jumper.  However, the unit shipped with a harness that jumpers pin P3-3 to P3-7.  I reinstalled that jumper when the new control board came in.  Again, all the buttons on the control surface work, but I get the E1:F3 fault when I press start.

So if I configure the stove to free-standing, hidden-bake (by removing the jumper), I still get a functioning keypad, but the Start button believes it's the number 8.  That is, when I press Start, the number 8 displays in the time display.  Hit it again and it displays 88, etc.

BTW, at no time have I ever been able to initialize the End of Service Test Sequence in the service manual.  I do see the PF indicator, but as soon as I start pushing buttons, they act like normal buttons.

Thoughts?

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