Discuss

Thermador display is very dim

 in

Oven Repair (including Ranges and Cooktops)

. "

We replaced the capacitors on the main board of the oven and the completely dim display stayed the same. Today

..."
 
 
Register | FAQ's | New Posts | Today's Posts | Extras
Appliance Repair Forum > Appliance Repair Help > Oven Repair (including Ranges and Cooktops) » Thermador display is very dim

Post New Thread  Reply By reading any content on this site you agree to AppliancePartsPros.com, Inc. disclaimer and Terms of Use.
 
LinkBack Thread Tools Search this Thread Display Modes
  #101 (permalink)  
Old 05-07-2016, 03:45 PM
Junior Member
 
Join Date: Sep 2015
Posts: 6
QuinnKurk is on a distinguished road
Default

Appliance Parts from AppliancePartPros.com


We replaced the capacitors on the main board of the oven and the completely dim display stayed the same. Today we replaced the 3 capacitors on the display board and I'm happy to say the entire display is bright and beautiful. I'm lucky to have a local store to buy the parts so did not have to pay for shipping, so it cost about $5 to fix the problem. (Make sure to buy high heat capacitors.) I would recommend this route if you know how to replace capacitors, or hire someone to do it. Cheaper than sending out the board to be repaired, or than buying a new board.

Good luck everyone!

Reply With Quote
See inside of your appliance - diagrams and part photos for virtually every model.

powered by AppliancePartsPros.com
 
  #102 (permalink)  
Old 06-02-2016, 10:58 AM
Junior Member
 
Join Date: Mar 2009
Posts: 2
mars315 is on a distinguished road
Default Question about the different boards.

What is the difference between the Main board and the Display board? How will I know when I delve into the oven? I have a Thermador S301T and the oven works fine but I can't see the temperature display and the clock is not as bright as it once was. Thanks!
Reply With Quote
  #103 (permalink)  
Old 06-11-2016, 05:22 PM
Junior Member
 
Join Date: Sep 2015
Posts: 6
QuinnKurk is on a distinguished road
Default

I'm referring to the display board as the electronics attached to the panel that displays the clock, timer and temp. (There is another larger board deeper in the oven that I am referring to as the control board.)
Reply With Quote
  #104 (permalink)  
Old 06-11-2016, 05:23 PM
Junior Member
 
Join Date: Sep 2015
Posts: 6
QuinnKurk is on a distinguished road
Default

Quote:
Originally Posted by mars315 View Post
What is the difference between the Main board and the Display board? How will I know when I delve into the oven? I have a Thermador S301T and the oven works fine but I can't see the temperature display and the clock is not as bright as it once was. Thanks!
It sounds like you are having the same issue as me. Try replacing the capacitors to see if that helps. Good luck.
Reply With Quote
  #105 (permalink)  
Old 01-08-2017, 07:44 AM
Junior Member
 
Join Date: Jan 2017
Posts: 1
Kristopher99 is on a distinguished road
Default Which of the four capacitors do you replace?

I have thermador dual oven with display number 100-01044-02. Which of the four capacitors do you replace? I have 2 together on the left (470f35v and 220f35v) with one above (470f35v) and one small on on the right side (22f 50v). Thanks for your help! It looks like this one listed above on ******** search ******** item/281999984487

Last edited by Kristopher99 : 01-09-2017 at 05:45 AM. Reason: Correcting
Reply With Quote
  #106 (permalink)  
Old 09-03-2017, 02:48 PM
Junior Member
 
Join Date: Sep 2017
Posts: 1
The Beekeeper is on a distinguished road
Default No change for me

My two-door thermador has a very dim display, with only the clock at all readable (and barely at that). After reading this thread, I replaced two 470 microfarad capacitors and one 220 microfarad capacitors, all 35 volts. When I reassembled the oven, the display was the same.

Should I try replacing the small 50 volt 22 microfarad capacitor at the other end of the control panel? Any other parts that could contribute to this?

thx
Reply With Quote
  #107 (permalink)  
Old 01-02-2018, 10:37 PM
Junior Member
 
Join Date: Oct 2012
Posts: 4
jp_austin is on a distinguished road
Default POD301 capacitors

As an old appliance tech this was a fun one to debug. I must say I am an electrical engineer (30 years) and can tell you that I would never specify caps that only have a 6.3V rating if the operating voltage is in the 3-5V range. Way too close between nominal voltages and the max rating. Your asking for troubles in a high heat environment like this. I too had to replace my display caps. In my case on the POD301 type unit the caps were two 330uF and only rated at 6.3V. See pics as they were slightly bulging. Once replaced the POWER ON LED was brighter and more important the oven is behaving much better. There were some higher voltage caps as well but they looked fine. I replaced with 330uF caps but 105C and 16V rated versions. This is only usd for decoupling so they are not that critical to be absolutely drop in replacements. Mine were standard cans I placed sideways and bent the pins to align to the surface pads of the PCB. Just use a bit of sealant or hot glue to hold them in place. A high temp sealant is preferred as the higher heats may melt the hot glue! I used electrical compatible silicone. Standard silicone has acetic acid and will attack a PCB's wiring as it cures.

For others... The higher voltage rating caps likely will survive the higher temps and abuse a lot longer than lower voltage rated caps. Check the low voltage versions first and look for bulging or a tar like substance that may be on the board near the caps. The electrolyte in the caps can sometimes leak out and this causes the inner laminates to short out and conduct. If you replaced all your suspect caps and you still don't have good operation verify the power supply board. On my oven there is a separate supply board with more large decoupling caps. I verified all those caps looked fine on my board first. If your supply board is acting up it may also be supplying the 12V for the lights inside the cabinet. Verify you don't have any issues with voltages at the lights or delivered to the front control module. Could point to the supply board going bad. Lastly verify the large relay board that controls the main elements. There are several large electrolytic type caps on that board. Potential issues are bulging or mis-shaped cans. Lastly there could still be communications issues between the control board and the relay board. On my system the control board only has a 3 pin connector to the front panel. Power, ground, and a single signal. Serial communication is used to communicate to the relay board. If you have fundamental issues with voltages then it's possible that the received signal has been corrupted so the relay board will misbehave or not respond at all.

Check to see if your oven has a service guide. I luckily found mine online and used it extensively to help isolate the issues.
Attached Images
File Type: jpg IMG_9858.JPG (279.5 KB, 9 views)
File Type: jpg IMG_9859.JPG (193.9 KB, 8 views)
File Type: jpg IMG_9860.JPG (142.8 KB, 8 views)

Last edited by jp_austin : 01-02-2018 at 11:00 PM.
Reply With Quote
See inside of your appliance - diagrams and part photos for virtually every model.

powered by AppliancePartsPros.com
 
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Dim display thermador double oven Alvin Oven Repair (including Ranges and Cooktops) 22 01-15-2016 08:24 PM
Thermador display panel dim, all else ok xxoxx Oven Repair (including Ranges and Cooktops) 3 07-07-2009 06:57 PM
Thermador oven display is very dim musicartgolf Oven Repair (including Ranges and Cooktops) 0 06-20-2009 05:24 PM
thermador range display not working sam Oven Repair (including Ranges and Cooktops) 6 06-10-2009 07:06 AM
Thermador display out indecision Oven Repair (including Ranges and Cooktops) 5 12-04-2008 10:20 PM



All times are GMT -7. The time now is 11:46 PM.

The content on this web site is for informational purposes only and is not intended to replace an on-site diagnosis from a qualified appliance service technician. By reading any content on this site you agree to AppliancePartsPros.com , Inc. disclaimer and Terms of Use.
Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO ©2011, Crawlability, Inc.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17