Question about Jenn-Air W30400P Stainless Steel Electric Single Oven

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Dim light on oven display w30400b jennair

Someone wrote in that they found out that they could replace the c3 capacitor. where do you find the board repair solution rather than the board replacement solution.
the two main boards seem to be whirlpool ap4095668 and maytag ap378360

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  • barbaraT2 Apr 13, 2009

    Our display has been on it's way out for a while. Works only with oven
    use (dimly). Recently the temperature control for the oven itself seems
    to not be working correctly. Wonder if the templ. problem would also be fixed by replacing the boards?

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The circuit board is for the display/touch panel. It is mounted on the back of the display panel itself and connected to the other circuit boards by two multipin connectors. When you remove the display panel (3 screws on top, 4 on the bottom) you will be able to GENTLY detach those connectors. They are low voltage and may be handled safety even when the oven is powered, but I agree that turning off the oven circuit breaker is good practice.

To remove the circuit board, GENTLY release the two black plastic tabs; the solder pads are underneath. I too used a 100 mf capacitor because no local supplier had a 68 mf hi-temp. Observe polarity; the (-) lead goes towards the center of the board (away from the edge connector.)

BTW, I had exactly the same symptoms (display goes dim, then goes out altogether.)

Posted on Jan 22, 2009

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BrianGem posted a great solution back in May of '08, I just completed that fix on my own Jenn air, took me about 30 minutes once I got the correct capacitor.
The display board apparently has a weak spot in the
design, most likely heat related, (probably low priced components from offshore sources)
Fix: Replace heat damaged capacitor labeled C3 on display board, Hard part will be obtaining the 35Volt 68uF capacitor, I'm lucky enough to have a Brother in the electronics design field who found me a couple of high reliability caps designed for hot applications, He does not recommend changing sizes without design review for fear of overloading another component, however several other posts have indicated that a 35V 100mF cap has worked fine for them.

TURN OFF POWER TO OVEN PRIOR TO STARTING ANY REPAIRS.
My control panel was attached to the oven with 4 screws accessed from above the top oven door, the panel slid up about 1/2 " and lifted off, Unplug the ribbon cables and the panel can be removed to a convenient work surface. The display board itself is mounted with 4 screws and connected with a wide flat ribbon cable, the suspect capacitor is surface mounted to the reverse side of the board, two plastic clips need to be released (gently) and the ribbon cable unplugged. Capacitor is likely discolored or leaking, Using as small a soldering iron as you can find De-solder it and replace with new, match polarity marks and don’t use any more solder than needed.
If you run into trouble drop me an e-mail to dltatsjc@aol.com and I’ll try to help.
If you opt to just replace the control board see if this link helps; Parts website:http://www.repairclinic.com/Home.aspx
Good luck.
Thanks for this site..

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BrianGem posted a great solution back in May of '08, I just completed that fix on my own Jenn air, took me about 30 minutes once I got the correct capacitor.
The display board apparently has a weak spot in the
design, most likely heat related, (probably low priced components from offshore sources)
Fix: Replace heat damaged capacitor labeled C3 on display board, Hard part will be obtaining the 35Volt 68uF capacitor, I'm lucky enough to have a Brother in the electronics design field who found me a couple of high reliability caps designed for hot applications, He does not recommend changing sizes without design review for fear of overloading another component, however several other posts have indicated that a 35V 100mF cap has worked fine for them.

TURN OFF POWER TO OVEN PRIOR TO STARTING ANY REPAIRS.
My control panel was attached to the oven with 4 screws accessed from above the top oven door, the panel slid up about 1/2 " and lifted off, Unplug the ribbon cables and the panel can be removed to a convenient work surface. The display board itself is mounted with 4 screws and connected with a wide flat ribbon cable, the suspect capacitor is surface mounted to the reverse side of the board, two plastic clips need to be released (gently) and the ribbon cable unplugged. Capacitor is likely discolored or leaking, Using as small a soldering iron as you can find De-solder it and replace with new, match polarity marks and don’t use any more solder than needed.
If you run into trouble drop me an e-mail to dltatsjc@aol.com and I’ll try to help.
Good luck.
Thanks for this site..

Link to Photo sequence of capacitor replacement (Captions still will not link):
http://picasaweb.google.com/dltatsjc/Photos?authkey=Gv1sRgCJPKv9CRgsXxNA

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BrianGem posted a great solution back in May of '08, I just completed that fix on my own Jenn air, took me about 30 minutes once I got the correct capacitor.
The display board apparently has a weak spot in the
design, most likely heat related, (probably low priced components from offshore sources)
Fix: Replace heat damaged capacitor labeled C3 on display board, Hard part will be obtaining the 35Volt 68uF capacitor, I'm lucky enough to have a Brother in the electronics design field who found me a couple of high reliability caps designed for hot applications, He does not recommend changing sizes without design review for fear of overloading another component, however several other posts have indicated that a 35V 100mF cap has worked fine for them.
My control panel was attached to the oven with 4 screws accessed from above the top oven door, the panel slid up about 1/2 " and lifted off, Unplug the ribbon cables and the panel can be removed to a convenient
work surface. The display board itself is mounted with 4 screws and connected with a wide flat ribbon cable, the suspect capacitor is surface mounted to the reverse side of the board, two plastic clips need to be released (gently) and the ribbon cable unplugged. Capacitor is likely discolored or leaking, De-solder it and replace with new, match polarity marks and don’t use any more solder than needed. TURN OFF POWER TO OVEN PRIOR TO STARTING ANY REPAIRS.
If you run into trouble drop me an e-mail to dltatsjc@aol.com and I’ll try to help.
Good luck.
Thanks for this site..

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BrianGem posted a great solution back in May of '08, I just completed that fix on my own Jenn air, took me about 30 minutes once I got the correct capacitor.
The display board apparently has a weak spot in the design, most likely heat related, (probably low priced components from offshore sources)
Fix: Replace heat damaged capacitor labeled C3 on display board, Hard part will be obtaining the 35Volt 68uF capacitor, I'm lucky enough to have a Brother in the electronics design field who found me a couple of high reliability caps designed for hot applications, He does not recommend changing sizes without design review for fear of overloading another component, however several other posts have indicated that a 35V 100mF cap has worked fine for them.
My control panel was attached to the oven with 4 screws accessed from above the top oven door, the panel slid up about 1/2 " and lifted off, Unplug the ribbon cables and the panel can be removed to a convenient work surface. The display board itself is mounted with 4 screws and connected with a wide flat ribbon cable, the suspect capacitor is surface mounted to the reverse side of the board, two plastic clips need to be released (gently) and the ribbon cable unplugged. Capacitor is likely discolored or leaking, De-solder it and replace with new, match polarity marks and don’t use any more solder than needed. TURN OFF POWER TO OVEN PRIOR TO STARTING ANY REPAIRS.

If you run into trouble drop me an e-mail to dltatsjc@aol.com and I’ll try to help.
Good luck.
Thanks for this site..

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douglas9101,
I had the same problem and found the solution on-line.
Replace the C3 capacitor on the dispaly module. (100 UF, 35 volt, high temperature)
The local Jenn Air dealer wanted $211 for a new display module.
I purchased a Cap from a local electronics supply store for 79cents.
The only problem is that you need to have a soldering pencil/iron, a solder ******/wick and a small amount of solder.

Steps I had to take on my oven:
- Flip the AC breaker supplying the oven to off to be save
- remove 3 screws on top and 4 on the bottom of the display panel
- gently pull out the display panel and unplug the 2 cables to the display
- unclip the ribbon cable to the display module
- unclip the module itself by pushing on the 2 black tabs
- locate C3
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- reasemble in reverse order.

It took me all of 20 minutes. It may sound difficult but is very easy if you have the tools
Good Luck
K

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See other posts regarding replacement of capaciter #C3 on control board, cost of capaciter approx 65 cents.


BrianGem posted a great solution back in May of '08, I just completed that fix on my own Jenn air, took me about 30 minutes once I got the correct capacitor.
The display board apparently has a weak spot in the
design, most likely heat related, (probably low priced components from offshore sources)
Fix: Replace heat damaged capacitor labeled C3 on display board, Hard part will be obtaining the 35Volt 68uF capacitor, I'm lucky enough to have a Brother in the electronics design field who found me a couple of high reliability caps designed for hot applications, He does not recommend changing sizes without design review for fear of overloading another component, however several other posts have indicated that a 35V 100mF cap has worked fine for them.
My control panel was attached to the oven with 4 screws accessed from above the top oven door, the panel slid up about 1/2 " and lifted off, Unplug the ribbon cables and the panel can be removed to a convenient
work surface. The display board itself is mounted with 4 screws and connected with a wide flat ribbon cable, the suspect capacitor is surface mounted to the reverse side of the board, two plastic clips need to be released (gently) and the ribbon cable unplugged. Capacitor is likely discolored or leaking, De-solder it and replace with new, match polarity marks and don’t use any more solder than needed. TURN OFF POWER TO OVEN PRIOR TO STARTING ANY REPAIRS.
If you run into trouble drop me an e-mail to dltatsjc@aol.com and I’ll try to help.
Good luck.
Thanks for this site..

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