Question about Thermador SC302T Electric Double Oven

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Lighting panel in my electric Thermadore double oven is dim.

The lighting on the control panel of my Thermadore double, electric oven has gotten dim and hard to read can you give me any advice on repairing this problem? 220 volt 40 amp three wire connection. Purchased in 2003 new, had control panel replaced after 6 months service, in 2004.

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  • goober123 Nov 21, 2008

    They use a vacuum flourescent display. Its driven from voltages from a Transformer - and capacitors used to stabalize those voltages. I was told by a tech that the capacitors are notorious for going bad due to the heat that the boards see. I am planning on taking the board out and replacing all the capacitors first. If its not them...then its the transformer. In a dim light I can see that the info is correct ...the flourecent part isn't bad - it has to be the voltages used to emit electrons from the filament, or the voltage on the grid that is used to accelerate them toward the flourescent display.....stay tuned.

  • Arsenault Nov 28, 2008

    Our Oven just started with this problem tonight and we were looking to find out what the fix was. Our oven still works great but the display is just dim. Do you know where to find the Model # for the oven we bought a floor model in 2002 and we did not get an owners manual for it. Any help would be great.

    Thanks

  • lsaling Dec 16, 2008

    model SC301T display slowly went dim until it went out.

  • Annaport77 Dec 22, 2008

    Oh wow...I have the Thermador Built in Ovel Model SCD302 and my control Panel display window was dim and now it is completely out! My oven is only 3 years old! Very disappointing! I heard that the control panel must be replaced in its entirety but I will stay tuned! Thanks!

  • bettyseven Feb 09, 2009

    Goober123 - can you write more specifically on how to replace the "cap"?  Thanks.

  • fairwayterra Mar 03, 2009

    My lighingt panel is out..I was told the Mother Board had to be replaced?

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The cap replacement worked....saving $250 (every 2 years !!!) I posted it on another site...now its making its way around the web....its the only value added thing I've done on the web (sadly!).

Posted on Feb 06, 2009

  • goober123 Mar 22, 2009

    You have to know how to solder.

    Clip the 3 caps out carefully on the top side of the board.

    Use the soldering iron on the solder side to melt the solder - while GENTLY putting a pulling force on the top side stub thats left with some long nose pliers....pop out each of the stubs . Line up one of the new caps with the holes and hold and push GENTLY. Heat the bottom pads to allow the leads to pop through (one by one)...then add solder to the solder side to reflow the part to the pad...repeat..

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I just replaced two of the capacitors and it worked thank God. I couldn't get at the 3rd capacitor with the soldering iron because the display blocks it and I couldn't see how to remove the display unit. We had already begun shopping for a new double oven. This was the last resort. The capacitors were $1.78 apiece at an electronics store. A repairmen quoted us a $780 fix - with him shipping the parts out to be rebuilt because Thermador is out of business and not producing parts anymore. There is a great place in Canada called Appliancetimers.com which will rebuild the timer for you inexpensively ($109) but they also want you to send the Power Relay Board which requires removal of the double oven to get at it. We found that it was much too heavy to consider that solution.

Posted on Mar 27, 2009

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Replace the electrolytic capacitors on the display board: http://applianceguru.com/forum1/18842.html

Posted on Feb 05, 2009

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I see this post has been here for quite some time. Sorry you haven't had an answer yet, while I can't say why, If you still are inquiring, the problem lies in the control and harness assembly. In my professional experience with almost all thermador of this era it's sometimes a bad solder on the control pin connector from the display,(which can be fixed by a proficient soldering person or conversely destroyed by a poor one) a bad transformer integrated onto said control, or other times just a bad harness, you'll likely need a control in any event. When you purchase a control ( # 1051714 for 302-double or 1051712 for 301 single oven models, and around $200US check your local parts depot or service center.) they should have new harness enclosed in the packaging of the control.

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**I should add this could be a job for a professional tech, who depending on how proficient they are or how the environment is set up, could handle this in 30-45 min or so. It is quite straight forward for one experienced with servicing thermador units. I would suggest you insist on an authorized b/s/h tech, they tend to have more of the update info if any or reworks etc.**

The above (re: hiring a tech) is just my opinion based on my professional experience and there may be opposing opinions, in the end you are the authority.

hope I've been helpful to you,

Good Luck

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