Dim Clock LCD on Jenn-Air wall oven

[retiredcaps]

Re: Dim Clock LCD on Jenn-Air wall oven

Well, I tried it too -- went ahead and replaced all 4 of the caps --- and now nothing works.

1) Caps have polarity (positive and negative). Check to see that you put it in right.

2) Check your soldering. Give the caps a gentle tug. They should be held in firmly.

3) Post a clear focused picture of your work and maybe we can tell you if the solder is good or not. See my sig file below for instructions.

[buni]

Re: Dim Clock LCD on Jenn-Air wall oven

Well, I tried it too -- went ahead and replaced all 4 of the caps --- and now nothing works. (Before, I could at least operate things with the buttons even tho I couldn't see what I was doing.) Who knows what I did wrong - it's my first time trying something like this (tho I am very handy). Maybe I injured the board somehow when I was putting it back together? I dunno.

But that said, I wouldn't have been happy replacing the board without trying - so I guess it's all part of the game. Only problem I had is I foolishly attempted the repair while some cookies were "resting" for 2 hours -- and I ended up having to go to a friend's to bake all the cookies.

Plan ahea . . .
.............d!

Thx for your good info - it was, at least interesting, and I learned something even tho my efforts failed. I now know I can replace the board. So -- that's the next task. I'm going to buy a used one off ebay (guaranteed)- $75 -- hopefully it will work. Not sure I'm willing to sink a couple hundred $$ for a new board on an older range. Time will tell.

[ratdude747]

Re: Dim Clock LCD on Jenn-Air wall oven

@RD: Its currently #6 with the most views under "Other Devices". If only Dell W1700 LCD Rev00 were moved to "Computer Displays", I would have a crack at the top spot

well, so what?

thats not what makes the thread notable.

what does is the number of people who were not orginally members being helped by it is.

Especially considering it is not a device normally thought of as recappible, makes this a rather unique thread. LCD's, yeah, most do need a recap eventually. Wall ovens on the other hand are a tad obscure not what comes to mind as "needs a recap".

way to got Bluto for a great thread!

[bluto]

Re: Dim Clock LCD on Jenn-Air wall oven

@IthinkIcan: Congratulations on the repair!

@primeq: It looks like the ebay repair deal is for an old style mechanical clock wherein the refurbisher procured a quantity of NOS parts to accomplish the repair. Although I have seen some examples of our clocks on ebay that were refurb'd. Or more like fubar'd? There is a picture of one earlier in the thread where the replaced C3 was sticking out like a sore thumb.

@RD: Its currently #6 with the most views under "Other Devices". If only Dell W1700 LCD Rev00 were moved to "Computer Displays", I would have a crack at the top spot

[ratdude747]

Re: Dim Clock LCD on Jenn-Air wall oven

this thread deserves an award... maybe a sticky?

[IthinkIcan]

Re: Dim Clock LCD on Jenn-Air wall oven

Another thanks to Bluto for the repair instructions and everyone else’s trials and tribulations. My situation:
Jenn-Air JJW9630BAW Double Oven
Clock # 71003401 with dim readout (second time in 9 years).

C4* 470uF 35v
C3 68uF 35v
C7 22uF 50v
*= No access to C1 soldering points as the display is in the way (possibly guitarman66 comment)…no matter, didn’t need to replace to repair it.

I picked up all 3 pieces for $3 at my local electronics store, and ½ hour from shutting off the breaker to turning the breaker back on. I’m uncomfortable with electronics but capable of soldering (I could have just as easily put the cap in backwards like the other guy).

You helped save me $150+…THANK YOU!

[primeq]

Re: Dim Clock LCD on Jenn-Air wall oven

I actually fixed this bugger a while ago, but though it would document it now so someone else with the same problem might be able to Google this and save some $.

Bluto - you saved me $100 (or $170) . Some guy on eBay is offering repair of these units for $100 a pop. Good margin I think.

C3 was in fact bad on my board. I never had a 68uF/35V lying around so I tried a 100uF/50V and it works well (fair warning - I tested the 100uF and it measured 100uF, so you mileage may vary).

[bluto]

Re: Dim Clock LCD on Jenn-Air wall oven

On mine the small 68uf was bad only one totally bad (causing the problem). It is so small that it did not bulge. There was a small dot of electrolyte underneath it. I replaced all the other caps at the same time as a precaution. But the path of least resistance would be to just do the one.

[arrowdad]

Re: Dim Clock LCD on Jenn-Air wall oven

Thanks for your quick reply. I will try to get the caps replaced and see what happens.

[Th3_uN1Qu3]

Re: Dim Clock LCD on Jenn-Air wall oven

Yes, they could have dried out without bloating. Replacing them should fix the issue.

[arrowdad]

Re: Dim Clock LCD on Jenn-Air wall oven

I have a JennAir SVE47500 oven. The display is extremely dim for the clock; the temp and other controls don't display at all. I think I need to replace the caps, but when I look at them they look OK. They are not bubbled on the top. Could they still be bad? Attached is a picture of the board, if that is helpful to anyone. Thanks in advance for your help.

arrowdad

[thebrainfarm]

Re: Dim Clock LCD on Jenn-Air wall oven

Thanks for posting Bluto and Webtalk for your very concise pics.
I was surprised at how common a problem this is.
Thankfully I have all of my repair instructions in this forum.
Love the net!

[tshirk]

Re: Dim Clock LCD on Jenn-Air wall oven

My sincere thanks to everyone who posted on this forum. I just repaired my Jenn-Air model SVD48600B stove for essentially 0.34 cents. The stove was experiencing the symptoms of very dim clock and no temperature display. I ordered the capacitors from Digi-Key Corp. (www.digikey.com) on Friday and they were delivered on Monday (today). This was a very easy repair. Though I replaced all four capacitors on the clock control board only the C3 capacitor required replacement. The soldering iron I used was a Black & Decker C1500S dual temp. With it's pencil point this is an ideal circuit board soldering iron. For the money, (less than $20) the Stahl Tools SSVT Variable Temperature Soldering Station is another good choice. Also useful is a desoldering bulb (Model:64-2086 Radio Shack) or desoldering braid to aid removal of circuit board solder holding the capacitors to the board.

[Longbow]

Re: Dim Clock LCD on Jenn-Air wall oven

The code FC means "communication error between boards". Mostly likely the flexible plastic connector is not plugged in correctly to the timer board, or the wired connector is in the wrong position. Pressing "Cancel/Off" will stop the beeping, but if the error is still present the beeping will continue. Re-check your connectors. The flexible cable is a bit difficult to install.

[bluto]

Re: Dim Clock LCD on Jenn-Air wall oven

@P10292: In this case FC and FM should work the same.

@marcottefamily: You should verify that all the connectors were re-installed properly. If it still won't work, post some pictures of both sides of the board for our experts to look at.

[marcottefamily]

Re: Dim Clock LCD on Jenn-Air wall oven

Hi - I ordered and replaced the caps as instructed. The panel lights up now, but I'm getting a beeping sound with FC displayed. Any advice? Thank you.

[P10292]

Re: Dim Clock LCD on Jenn-Air wall oven

Welcome to the badcaps forums!

I guess I should have put all of that information in my original post. So after one more peek inside the oven, here are the specs and part numbers to order from Digikey. All part numbers listed are for Panasonic FC series capacitors. FM series part number shown in parenthesis where the FC series cap is out of stock at the time of this post.


On the clock module:

C1 & C4 470uF 35v P10301-ND (or the FM series: P12400-ND)
C3 68uF 35v P10292-ND
C7 22uF 50v P10318-ND

On my oven I also replaced the two caps on the power supply/relay board as a precaution. They were as follows:

3300uf 16v P10260-ND [filter cap] (or the FM series: P12373-ND)
47uf 50v P10321-ND [the only other cap on the board]

Question: are FC and FM series interchangeable? it looks like FM series have longer life at 105 degree C. So could I all use FM series instead? (I do notice that ripple current and impedance are different between FC and FM series, does that matter?) Thank you for your help.

[bluto]

Re: Dim Clock LCD on Jenn-Air wall oven

The glass vfd display piece was not an impediment to replacing all 4 capacitors on the board. The capacitors are far enough to the side of the board that they are not covered by the display. Removing the plastic shroud is all that is necessary. I don't really feel like opening up the oven again to take a picture.

[guitarman66]

Re: Dim Clock LCD on Jenn-Air wall oven

I actually fixed this bugger a while ago, but though it would document it now so someone else with the same problem might be able to Google this and save some $. I have a Jenn-Air electric wall oven with all digital controls. At some point the VFD display module began to get dim to the point it was unreadable. Some times it would come back to life but eventually faded out completely. After much teeth gnashing I determined the problem to be a bad capacitor. C3 a 68uf 35v was bad. The was a very small dot of electrolyte on the board below it. I ended up replacing all 4 capacitors on the clock module while I was at it. It has been about 2 years now and it is still going strong. Now I just need to get around to replacing the 2 caps on the power supply/relay board before they roast and burn out the whole works!

The clock module has the following numbers on it: 100-00695-20 CN 7601P483-60. The maytag part number is 71001799. The part costs around $170. May also be used on other Maytag made brands (Maytag, KitchenAid, Amana, Magic Chef, Kenmore, Whirlpool, etc).

Pics attached:

Hi Nice work how did you move the display out of the way to solder the parts? please post pictures....

[CC25]

Re: Dim Clock LCD on Jenn-Air wall oven

Which institution of higher learning does he attend, by the way?

Success. Part came today and we're back in action.

He's a Case Western Reserve Bio Med student. He did get a "B" in intro to circuits.

Thanks all!