Need help finding replacement transformer for oven control board

[In Kamloops]

Here are images of the 4 page Service Data Sheet


I hope this helps you BoS, and others. I'll check back in tomorrow.

Here is the video of the voltage measurements on the transformer: (1.5 minutes)

 

[BoS]

Here is the video of the voltage measurements on the transformer: (1.5 minutes)

Thank you very much,
you can send me scanned data sheet at email please,
Thanks one more and have a nice day.

 

[BoS]

Thank you very much,
you can send me scanned data sheet at email please,
Thanks one more and have a nice day.

O I did not see you already post picture, thanks they are all good visible,
I appreciate you hard work, Thanks

 

[In Kamloops]

You're welcome BoS. Good luck and please report back on this thread with your success. I'd like to know how it turns out for you.

O I did not see you already post picture, thanks they are all good visible,
I appreciate you hard work, Thanks

 

[Minder]

Thanks for the info, I suspect the difference in the secondaries are because one is loaded a little higher, most likely open circuit they would be nearer equal.
M.

 

[Tim Howell]

Replaced transformer (Open Primary winding) with a Tamura xfmer manuf part number 3FS-212 $5.45 from Digikey and it has been working fine. Which means Triad Magnetics F12-090-C2 or Hammond Manufacturing 164D12 will also work. Because capXon capacitors were on the board I replaced the two 16V 100uF caps with nichicon UPW1C101MED. Replaced the 25V 1000uF cap with Cornell Dubilier Electronics (CDE) / SEK102M025ST. The kicker in getting a 6.3v parallel / 12.6 V series xfmr was the thumbrule that the voltage rating of a filter capacitor on a full wave bridge should be at least twice the voltage. 25/2 = 12.5V, also the must operate voltage on the 12 volt relays were 9.0 volts and 9.3 volts on the manufacturer spec sheets. In hindsight I could of bumped up the voltage rating on the 1000uF cap when I ordered parts. I also ordered VARISTOR 430V 2.5KA DISC 10MM, TDKElectronics Inc. / B72210S0271K101 (the blue thing) but did not replace. An extra 50 cent cost is nothing if I didn't order it and later found out I needed it. I would have to reorder it, pay the 9 bucks or whatever minimum shipping is and then have to wait for the part. Hope this helps. Now go fix your board! Tim

 

[In Kamloops]

thanks for this. great info for me if it happens to my in-laws stove again. All the best

 

[Markus80]

Hi Can you tell me the value of R41? I'm hoping that replacing this will fix the problem. If not, I will look at obtaining the other components. Thanks!

 

[73's de Edd]

Sir Markus80 . . . . .
Got trouble with your bread burner . . . . . . e h h h h h h h ?
Initially in looking aside to other comparative resistors to evaluate for any potential photographic color shift. It looks . . .as best as the definition atttainable . . .to be a red-red-brown 220 ohm unit. Why are you suspect of it ? . . .or did you physically break it ?
Also, its in a relatively dead portion of the board with only adjunct power relays nearby.
Unless its smoked . . . and with the voltages ranges present on the board . . . . . only 22 or 220 ohm values typically could be suspect to fail and display any "charred" / " burnt" /or/ "burnt up" appearances..

73's de Edd . . . . .

 

[Markus80]

Hi and thank you! There was a power surge at one point and then we lost a bottom element. When we replaced the element, we found that it did not heat up properly so I checked the control board and R41 was burnt up and the element terminal was charred and desoldered. This seems to be a fairly common occurrence, as there have been others searching online for this same answer which you have provided me. I couldn't find a 220 so I tried a few 1/2W resistors in series adding up to 210. In any case, it made no difference: the oven still doesn't work. As a result, I decided its not worth my time (I would rather spend my free time considering the design of a gravity generator/battery for the home) so I purchased a new one online.

 

[Reza Rouzikhah]

Replaced transformer (Open Primary winding) with a Tamura xfmer manuf part number 3FS-212 $5.45 from Digikey and it has been working fine. Which means Triad Magnetics F12-090-C2 or Hammond Manufacturing 164D12 will also work. Because capXon capacitors were on the board I replaced the two 16V 100uF caps with nichicon UPW1C101MED. Replaced the 25V 1000uF cap with Cornell Dubilier Electronics (CDE) / SEK102M025ST. The kicker in getting a 6.3v parallel / 12.6 V series xfmr was the thumbrule that the voltage rating of a filter capacitor on a full wave bridge should be at least twice the voltage. 25/2 = 12.5V, also the must operate voltage on the 12 volt relays were 9.0 volts and 9.3 volts on the manufacturer spec sheets. In hindsight I could of bumped up the voltage rating on the 1000uF cap when I ordered parts. I also ordered VARISTOR 430V 2.5KA DISC 10MM, TDKElectronics Inc. / B72210S0271K101 (the blue thing) but did not replace. An extra 50 cent cost is nothing if I didn't order it and later found out I needed it. I would have to reorder it, pay the 9 bucks or whatever minimum shipping is and then have to wait for the part. Hope this helps. Now go fix your board! Tim

wowww. I have searched for some information about fixing my oven and finally I reached here and got everything I need. This site is an example of mutual cooperation to make the world better. Thank you all...

 

[Reza Rouzikhah]

As I wrote in the previous post, this is exactly what happened to me. With the information I got, I realized that the output of the transformer is 12 volts. To test to see if the board is damaged elsewhere, as well as for temporary use until I order and buy the transformer, I connected a DC voltage source (8 series 1.5 volt AAA batteries) with crocodile clips to the output of the diode bridge. The stove worked and we cooked the pizza. The next day, I thought of using 6 batteries instead of 8 (it was easier for me). The controller worked again. But after 30 seconds, smoke rose from the controller! I checked the R41 resistor was burned out!
Can anyone tell me why?
I also do not know the exact amount of resistor of R41? What percentage and how many watts? In the above posts, it is said that it is 220 ohms, but I am afraid I will make a mistake and it will be damaged elsewhere.

 

[Reza Rouzikhah]

....Finally I have repaired the control board by changing the transformer and the R41. it works fine..... if somebody has a question I am ready to explain everything. If the output voltage of transformer is around 9V the resistor R41 will be burnt ....