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retrac  
#1 Posted : Thursday, November 13, 2008 7:35:05 AM(UTC)
retrac

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Until a month ago oven took 9-10 minutes to heat to 425* then it increased to 17-18 minutes. Used it that way for a few weeks then my wife saw a flash while standing to the side of it. Bake worked no more so I pulled the hidden oven element (found out how on this board) and it was kaput. Ordered a new bake element from this site:D and installed with no complications or so I thought. When turned to bake nothing even though broil works fine. Any hidden fuses like some i've read about or is it another prob?

Thanks,
retrac
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v2k04  
#2 Posted : Thursday, November 13, 2008 9:35:27 AM(UTC)
v2k04

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did you already double check the element to make sure one of the wires didn't come off?
retrac  
#3 Posted : Thursday, November 13, 2008 12:47:25 PM(UTC)
retrac

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Both wires are attached. Guess I need to pull it back out and check voltage on each wire going to the element when in bake mode. While i'm at it I'll check the ohms of the element.
retrac  
#4 Posted : Thursday, November 13, 2008 2:52:13 PM(UTC)
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Element ohms are 24.6. Voltage is 122v on one lead and 1v and change on the other. Also checked incoming voltage at 121.9v & 122.2 to ground, 240 accross the two.

Thanks,
retrac
Gene  
#5 Posted : Thursday, November 13, 2008 5:51:36 PM(UTC)
Gene

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Remove the wire from the P2 terminal (according to the wiring diagram) on the power board and check for 120VAC between this terminal and ground while the control calls for Bake.

If there is no proper voltage then the power board is bad and has to be replaced.

- The part number for the power board is AP3174904

Here are the break down diagrams for the Kitchen aid range Model KERC607HBS8

Gene.
retrac  
#6 Posted : Thursday, November 13, 2008 8:43:46 PM(UTC)
retrac

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P2 shows a fraction of a volt with the connector removed from the power board. Looking at the power board, the wires in the connector are vi, r, blu, blank & blk and the violet shows 122v. On another note, I noticed a slight discoloration around a transistor on the control panel board. Could this be the flash the wife saw (doubtful) and could be interupting the voltage to P2 (again doubtful)? What goes bad on these power boards when there is no obvious electrical damage on the IC? Relay maybe?

Thanks,
retrac
Gene  
#7 Posted : Friday, November 14, 2008 10:32:18 AM(UTC)
Gene

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In my opinion the first failure suspect is the power board (probably a bad relay). This transistor is questionable.

Gene.
retrac  
#8 Posted : Friday, November 14, 2008 12:11:28 PM(UTC)
retrac

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Thanks Gene. Wish I could replace the suspect relay, probubly could if I were able to nail down the relay on the board and purchase a replacement. Could the original failure of the bake element be because the outer broil element went bad causing the bake element to work double duity getting to and keeping the oven at the desired temp? The reason I ask is while ohming all elements the outer broil is open, inner is fine.

Again thanks,
retrac
Gene  
#9 Posted : Friday, November 14, 2008 12:23:00 PM(UTC)
Gene

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Originally Posted by: retrac Go to Quoted Post
...Could the original failure of the bake element be because the outer broil element went bad causing the bake element to work double duity getting to and keeping the oven at the desired temp?...


I do not think so. A faulty relay is one of most common problems with all kind of power (control) boards.

Gene.
P.S. Replace the Broil element too. The part number is AP2926636
retrac  
#10 Posted : Friday, November 14, 2008 3:26:39 PM(UTC)
retrac

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Originally Posted by: Gene Go to Quoted Post
I do not think so. A faulty relay is one of most common problems with all kind of power (control) boards.

Gene.
P.S. Replace the Broil element too. The part number is AP2926636
The reason I asked this is when the bake element went out and I pulled it, there were two 2" to 3" pieces that had melted and dropped to the pan below. Also will be replacing the dual broil element though it's OOS on the site.

Thanks,
retrac
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