I have two Jenn-air (maytag ) ovens.Both were purchased new in 2004,and rarely ever used.Of course the digital readouts on both ovens are always on,and show the time. Over a 4-5 year period i noticed the readouts were getting dimmer and dimmer,until they finally both went out. I can still use the ovens,but you are you have to be good at knowing what you are keying in on the pad,becuase you cannot see anything showing up on display as you are keying it in.
I have heard from a appliance repair place in my town,that this is a common problem with these units.
Could you please advise me,on what i should do to repair these ovens, thanks for all your help.
Here are your parts
Replacement parts for JENN-AIR JJW8530CAB WALLOVEN- S/C ELE | AppliancePartsPros.com
Sounds like a display power supply problem on the control board.
You could replace the boards but for a lower cost fix replace the capacitors (can type parts on the control board), see below.
Note the capacitors are electrolytic type so take not where the positive and negative leads are as polarity is important.
Here is the board, click on the picture and a new page will open with a Q&A on this part.
AP6010716
Here is a thread about this type of problem.
http://forum.appliancepartspros.com/oven-repair-including-ranges-cooktops/1058-thermador-display-very-dim.html?highlight=dim+display
Ok,thanks so much for that diagnoses,and for telling me how to fix it for a lower cost,much appreciated. I own a pawnshop,with my own technician.I will ask him to change out the capacitors,and get back to you if that remedies the problem.
thanks so much mike b.[QUOTE=denman;641295]Here are your parts
Replacement parts for JENN-AIR JJW8530CAB WALLOVEN- S/C ELE | AppliancePartsPros.com
Sounds like a display power supply problem on the control board.
You could replace the boards but for a lower cost fix replace the capacitors (can type parts on the control board), see below.
Note the capacitors are electrolytic type so take not where the positive and negative leads are as polarity is important.
Here is the board, click on the picture and a new page will open with a Q&A on this part.
AP6010716
Here is a thread about this type of problem.
http://forum.appliancepartspros.com/oven-repair-including-ranges-cooktops/1058-thermador-display-very-dim.html?highlight=dim+display[/QUOTE]
Hi,Denman. I also wanted to let you know,I compared the pix of your clock board picture to my clock board and they look different. So I wanted to know,should I tell my technicion to just change all the capacitors on the board,or will he be able to tell which are bad,and just change those? [QUOTE=denman;641295]Here are your parts
Replacement parts for JENN-AIR JJW8530CAB WALLOVEN- S/C ELE | AppliancePartsPros.com
Sounds like a display power supply problem on the control board.
You could replace the boards but for a lower cost fix replace the capacitors (can type parts on the control board), see below.
Note the capacitors are electrolytic type so take not where the positive and negative leads are as polarity is important.
Here is the board, click on the picture and a new page will open with a Q&A on this part.
AP6010716
Here is a thread about this type of problem.
http://forum.appliancepartspros.com/oven-repair-including-ranges-cooktops/1058-thermador-display-very-dim.html?highlight=dim+display[/QUOTE]
I doubt he will be able to tell so I would replace all the electrolytic capacitors.
There are usually only 3 or 4 of them.
[QUOTE=denman;641476]I doubt he will be able to tell so I would replace all the electrolytic capacitors.
There are usually only 3 or 4 of them.[/QUOTE]
Ok,thanks again, will probably be able to show him tomorrow,will get back to you on results.
I replace the C3 capacitor 85 uf/35v with a 100uf /35v cap display lit up then the new cap popped and display dimmed out ouver an hr. Should I replace again and replace the other 3 additional capacitors or is ther something I should be checking on the relay board?
Thanks.
[quote=denman;641476]I doubt he will be able to tell so I would replace all the electrolytic capacitors.
There are usually only 3 or 4 of them.[/quote]
[COLOR=“DarkRed”]Should I replace again and replace the other 3 additional capacitors or is ther something I should be checking on the relay board?[/COLOR]
I cannot say but it may be worth a try.
Did you make sure that the replacement was installed with the correct polarity?
The schematics for the boards are not available so I am not sure which caps are involved with the display power supply.
It could also be that another component on the board is shot and that is effecting the capacitor by puttong too much load on it.
I had the capacitor that blew replaced and installed again. This time no function but the oven light will work. Before when the cap blew I still had all the functions of oven and could even see very dim clock.
I checked the cap to make sure the tech soldered properly and it was loose… took it back to have it redone and he checked to make sure the board was getting juice.
You’ll have to excuse my vagueness as I am not very proficiant with capacitors and eletronic boards. I have a feeling he messed up the contacts wehn putting on latest Capacitor? I can get a whole new display, but don’t want it to be a relay or something. I just don’tunderstand how all functions worked with popped capacitor but now nothing works?
Any ideas?
I have a feeling he messed up the contacts wehn putting on latest Capacitor? I can get a whole new display, but don’t want it to be a relay or something.
Not sure what “messed up the contacts” means.
If you are a sloppy solderer and short actross acouple connection on the board you may well blow the board.
[COLOR=“DarkRed”]I just don’t understand how all functions worked with popped capacitor but now nothing works?[/COLOR]
To be honest either do I.
The reason to replace the capacitor is that it is leaking voltage so there is not enough voltage to drive the display. The lower voltage then causes a dim display.
FYI: The capacitors are electrolytic type basically is is a roll of tin foil with a dielectric between the layers. Over time the dielectric dries out and current can then flow from one layer to the next.
Here is a manual which covers this unit. It is not an easy unit to troubleshoot electrical problems.
http://appliancedigest.com/index.php?/files/file/482-16010312-jenn-air-electric-wall-oven-service-manual/
You have to join the site to download the manual but it is free and this is a very good site for manuals and other info for the appliance repair DIYer.
There is a possibility that a messed up repair could have blown the transformer on the relay board which feeds the 4 volts AC electronics drive and/or the 21 volt display drive voltages.
aA least that is what I think those voltages are used for, cannot really say for sure without a board schematic.
I had the capacitor(s) replaced by Radio Shack. I think the board was damaged when the 2nd Capacitor was put in.
He claimed he “tested”, but not sure how he did?
If I pulled the relay board would I be able to test and find out if one is bad?
Thanks for all your advise.
You could try it and check the windings on the transformer to see if they have continuity.
The problem here is that the transformer is connected to other parts so often you will see a resistance but it is the other components not the transformer winding.
Without proper board schematics checking the board is a hit and miss.
It does look like the plug J1 which has the power out from the relay board.
This could be checked with a live test and is probably best left to a pro.
This oven is fairly complex and with 240 volts all over the place not a good unit to learn how to do voltage checks.
[COLOR=“Red”]240 volts is lethal.[/COLOR]
No oven is worth getting hurt or killed over.
Hi,talked to my technician the other day, he said he pulled all of the capacitors,and tested them, and they were all good. He says he sees a transistor that shows bad,and wanted me to pull the main board,so he could hook the boards together,put power to them, and see if he can tell what is bad. I have the schematic that came with the units,and i am going to give this to him also. I am going to give him the clock board to the 2nd oven also,so he can compare any findings on this to the 1st also. Do you have any other suggestions,now that I have this info. and also,I put a thread on the forum about my kenmore dishwasher haveing problems,at the same time i put the oven thread,and so far,i have not had a reply from any of the techs,could you say as to why,i am not getting an answer about the washer, thanks mike for all your help.