Ge Induction Cooktop

Okay, I know it's now 2007 but I've researched this too and there's lots of good info on this here, but not in one place. I am plagarizing a variety of posts on this subject for this reason. If you have an induction cooktop from the 1990s, it uses power module part number WB27X5491 or WB27X5492 (check your parts list in the manual or for your model online, some GE and Kenmore models definitely have them), and the large burner no longer works, this could likely be your problem:

A bad voltage rectifier (Part No. 36MB100A-ND) which can be replaced with a newer one at around $10. You will probably have to order it online, you probably will not find it in a local hardware or RadioShack-type store. This is a part INSIDE the power module listed above, which is a whole assembly of many parts connected to two burners either on the right or left side of your cooktop. You have to disconnect your cooktop from the wires in your wall, take off the top (remove the upper grill screws and take off the grill and then the whole top can pop out), remove the power module (take out four screws), and take the power module apart some to find this part. Apparently, the rectifier is about 1" square and is easily replaceable with a screw driver - be sure and label the leads before removing the old one. One corner is marked with a PLUS sign as a reference. Then you put the power module back together and put it back in the cooktop. You then replace two fuses under the control panel that correspond to that power module, part numbers MDA-15 and MDA-20, which may or may not be locally available but certainly can be purchased online. You then put the top back on and hook the wires back up. If this is your problem, it should be solved with this procedure.

显然，大多数制造商和维修人员在诊断此问题时会告诉您，诊断出此问题时需要一个全新的电源模块，但是他们不再出售它们，或者如果您可以找到他们，他们非常昂贵。但是通常问题是电源模块内部或其他一些小部分。没有图表如何将整个电源模块放在一起，也没有我可以在任何地方找到的零件列表。因此，如果您自己进行此修复，则没有任何视觉参考可以进行。

Now let me put in the disclaimer that I have not actually performed this repair, but I have seen at least six posts from people who have successfully solved their problem with this. I have gotten as far as looking inside and seeing that the power module is much more complicated than I want to deal with, as I have no formal electrical training. But if you are comfortable with taking these kinds of things apart and putting them back together without a diagram, and don't mind the time it takes to do it, this could be an easy $10 fix to your problem.

Hope this helps! -cheryl

Well, my repairman stood me up so I attempted to do the repair I outlined further up in this thread myself. I found the recifier, it is on the bottom in the right hand corner in the front near the fuses for the right module, and about 8 or so inches to the left for the left module (or so I think). I didn't have to remove the whole module to get to it, I just removed each front burner to get to the screw holding each of the two rectifiers in. And I did change all four corresponding fuses, even tho in theory you only need to change the ones to the affected burners.

It worked on the front right burner. It did not work on the back left burner. I'm not sure if I didn't hook the rectifier up correctly, if there is another recifier elsewhere in the unit I can't see, or if there is another problem. I will further update when I get a chance to explore in there more. If anyone can tell me if there is another rectifier or other issue I should be looking for, that would be great.

I bought all my parts at digikey.com. The part numbers are in the procedure I outlined further up this thread.

I've attached a grainy cell phone pic of the affected parts for your reference.

I'm an idiot. There are FOUR voltage rectifiers, one for each burner. You have to take the affected burner off to see it, and it is attached to the base of the chassis/frame with a screw. So this time I replaced the correct voltage rectifier, and my rear left large burner is working again.

我已经附上了侦听器本身的图片，因此您知道要寻找什么。当您订购新的时，它可能会略有不同，但仍应工作。

Cheryl - how were you able to get this information? I never got any info out of GE from multiple calls over 5+ years.

How did I get this information?

好吧，我购买了用过和破坏的感应灶具，并对其进行了广泛的互联网研究，发现我拥有的许多Kenmore模型和同一年份的某些GE模型都遇到了相同的问题站点。然后，我拉起了每个原理图，发现它们实际上是同一单元，可能是在同一位置制造的，只是在上面打了不同的品牌。然后，我在本网站的Fix-It论坛上找到了原始帖子，有关如何在此处修复Problen：

//www.xmsej.com/wwwboard/messages/150101.html

but it really doesn't give you enough info to do the job if you are not familiar with electronics repair, which I am not. Unfortunately the poster's email no longer works, so you can't communicate with him directly. I continued looking in the fix-it forum in several threads that pursued the same issue and pieced together most of the info I needed from there. In these threads I noted that at least ten people were able to fix their problem with this solution, so I was confident it would work.

However, as you can tell from the multiple posts in this project, even then it was trial and error for me to fix it. So I detailed my progress as I went along and took pictures so the average idiot like me, with no electrical repair experience, could do this fix. I figured considering the replacement cost of a new induction cooktop, it was certainly worth sharing a less than $15 fix with others like me who had one that could get some more usuable life out of it.

So that's how I got this info. I wouldn't count on any repair or customer service having any knowledge of how to repair this technology, since it's not that prevalent here in the US. If it breaks, you are better off trying to fix it yourself, if the part that is broken is still available.

Good luck people!

Thanks for your detailed response. Another question - where did you find detailed schematics for these things. The GE help line sure isn not forthcoming.

I ask, because I'm trying to gather info now to keep the new one going 10 or 15 years in the future.

Okay, I'll give you links to the drawings but let me have a few disclaimers:

1)I only know that this is a known problem in both GE and Kenmore models that use burner modules WB27X5491 or WB27X5492 in them, from all the posts I've read. But I'm pretty sure that the voltage rectifier used in induction cooktops are standard for most if not all induction cooktops from the late 80's to early 90's, so I wouldn't be surprised if this was a problem in other models that used voltage rectifier Part No. 36MB100A-ND.

2) Both the GE and Kenmore schematics should be included inside your cooktop in a small envelope under your control panel of the cooktop. These are from the manufacturer and won't be any different than what is available online.

3) These schematics are the main assembly of the cooktop - the glass top, the control panel, burner modules, fuses, etc. It does not have a detailed view of inside the right and left burner modules, and you have to take those apart a bit to get to the voltage rectifier. When they built these, they assumed if something went bad in the burner module, they'd replace the whole module so there is no further detail available anywhere. So I don't know for this particular repair that the drawings will be all that helpful.

Both GE and Kenmore manuals, parts, and diagrams are available online for free. You will have to know your model number, eg. JP393, to get them.

At GE, the main page is:

http://www.geappliances.com/service_and_support/

Click on Parts & Accessories to get parts or schematic drawings.

Scroll down, and there's a place under Repair and Replacement Parts to put in your model number, eg JP393.

It should pull up a link to your model. Click on that.

选择Cooktop组件，然后单击GO。

It's going to show you a list of the parts that are still available to order. Ignore that for now, and look near the top of the page for a red link to the diagram of the COOKTOP ASSEMBLY.

It should pull up the drawing.

对于Kenmore，主要支持页面是：

http://www3.sears.com/

有一个可以放入您的型号的地方，例如。911.4292990，然后单击GO。

It should pull up your model. Click continue.

现在，它为您提供了进一步搜索特定零件的选项，或在零件列表和图表之间进行选择。选择图表，它将为您拉好。

FYI, unlike GE that only lists what parts are still available to order, Sears lists ALL the parts that were originally available when it was produced. Some are no longer available, and you won't know until you try to order them.

I hope this is helpful. These websites are not especially easy to navigate to find these things, and I hear that customer service doesn't really tell people how to get there.

我有一个GE-JP693，右边只有一个小燃烧器

手侧。该线程中的信息提供了鼓励

to look into repairing one or more of the burners. I did a wholesale

replacement of the power rectifiers with multicomp part MCCM35010-RH

available for less than $3 from many sources. This did fix the large

burner on the right side but unfortunately both left units still will

not work and the small burner on the left still blows its supply fuse.

通过比较工作的右手单位和左单位

able to identify a shorted power transistor in the left. (Attached

photo). I removed the transistor to see if I could identify the part,

但是到目前为止，我还没有运气。晶体管有一个泡沫垫

glued over the part ID and I wasn't able to save the part ID when

removing the pad. The glue had dissolved most of it.

If anyone knows where I can get a schematic or even a parts list for

the cook-top power units I would really appreciate it. I suspect that

这是一个常见的部分，可能不是很贵。我不想

spend $600+ for a replacement power unit when a $10-$20 part would

工作。

Jim

I have some info that might be helpful, but I'm afraid it's not good news.

When I first was researching this, back when I was considering purchasing the Kenmore cooktop used and broken, my findings from various places indicated it was one of two things: most likely the voltage recitifier, possibly also the transistor. All threads about the recitifer led to success. So I took a chance and bought it and it happened to be my problem.

关于晶体管问题，只有几个线程，并且没有一个成功解决问题。同样，我不是电工或有任何电动修理背景，但这是关于技术过时的事情，而那些晶体管的孩子则被另一种技术所取代。对不起，我不记得两种晶体管的名字，而且我敢肯定，最有用的线程不在鲍勃·维拉（Bob Vila）上。亚博老虎机网页版我确实知道，很有可能他们不再制造它们，最好的选择是在另一个单位上购买一个用过的单位。

我还可以告诉您，Sears客户服务的一次尝试并没有为我提供电源模块的零件列表，并且它使用了GE One的零件列表。它们具有整个模型的“零件列表”，但它列出了电源模块为一部分，而不是其中的部分。您可以尝试使用GE和Sears进行几次尝试，看看您是否与不同的人一起帮助您。您可以在此处查看Fix-IT论坛，看看是否有人愿意向您出售模块或晶体管。

I wish I could be more helpful. If you do find a solution, do post it here because you are not the first person to discover this issue but you could be the first person to solve it.

Thanks to cherylc, I repaired my large burners with Part No:

10M6174,(bridge rectifier) and Part No: 48K9695 (20 amp. cartridge fuse) which I obtained from www.newark.com for (4 pieces of each) less than $15. Total repair time was 1 hour. I bought more than I needed because I figured I'd need to repair it often...not so thus far. When you remove the rectifier, scrape off the white thermal grease on the bottom and apply it to the new rectifier...helps with heat dissipation. Also, check under your cooktop and use a vacuum to clean all the louvers on the pan there to prevent future heat-related parts failures.

HI JIM!
MY NAME IS ROBERTO AND I LIVE IN VENEZUELA.
我有一个肯印第安纳州,鸡笼前我买了1995AT USES THE PW MODULES WB27X5491&5492.RECENTLY THE PW MODULE LEFT LARGE BURNER STOP WORKING AND I READ A LOT OF TREADS ABOUT THIS PROBLEM IN INDUCTION COOKERS.
WHE I READ YOUR ABOUT THE TRANSISTOR AND THE PROBLEM YOU HAD TO SEE THE PART NUMBER OF IT I HAVE THE LOOK AND I AM GLAD TO TELL YOU THAT THE PART NUMBER OF THOSE TRANSISTORS(3 FOR EA PWMOD/ONE FOR THE SMALL BURNER AND TWO FOR THE LARGE BURNER MOUNTED IN A SIMPLE PCB IN BOTH CASES)IS:
"MG60M1AL1"
I HAVE BEEN LOOKING FOR THAT TRANSISTOR IN INTERNET AND IT IS NOT CHEAP THAN ONE CAN GUESS ($65) BUT IF ONE WANTS CHEAPER THAN THAT YOU HAVE TO BUY 5/10/20 AND UNTIL NOW ALL THE SUPLIERS I HAVE FOUND ARE FROM CHINA.
IN YOUR TREAD YOU SAY THE TRANSISTORT IS SHORTED. HOW DID YOU TEST IT AND WHAT THE REFERENCE VALUES YOU TOOK WERE TO FIGURED THE TRANSISTOR IS SHORTED?
FINALLY IF YOU RESOLVED YOU PROBLEM MAY YOU TELL ME HOW.
MY EMAIL IS: ticorodo@gmail.com.
I AM UPLOADED A PHOTO OF THE TRANSISTOR W/THE PART NUMBER ON IT.
I HOPE THIS HELP YOU.
ROBERTO

I changed out the entire board and now the left 2 'burners' will only heat to 3 not higher regardless. The 2 left 'burners', clock, and timer work as expected. Any thoughts on the right 'burners'? How to fix?