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Need help finding replacement transformer for oven control board

Discussion in 'Datasheets, Manuals and Component Identification' started by In Kamloops, Oct 22, 2017.

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  1. In Kamloops

    In Kamloops

    20
    1
    Oct 22, 2017
    Here are images of the 4 page Service Data Sheet

    Frigidaire stove Service Data Sheets page 1:4.jpg Firigidaire stove Service Data Sheets page 2:4.jpg Frigidaire stove Service Data Sheets page 3:4.jpg Frigidaire stove Service Data Sheets page 4:4.jpg
    I hope this helps you BoS, and others. I'll check back in tomorrow.




     
  2. BoS

    BoS

    7
    0
    Jan 15, 2018
    Thank you very much,
    you can send me scanned data sheet at email please,
    Thanks one more and have a nice day.
     
  3. BoS

    BoS

    7
    0
    Jan 15, 2018
    O I did not see you already post picture, thanks they are all good visible,
    I appreciate you hard work, Thanks
     
  4. In Kamloops

    In Kamloops

    20
    1
    Oct 22, 2017
    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.

     
  5. Minder

    Minder

    3,115
    666
    Apr 24, 2015
    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.
     
  6. Tim Howell

    Tim Howell

    1
    1
    Sep 22, 2019
    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
     
    Reza Rouzikhah likes this.
  7. In Kamloops

    In Kamloops

    20
    1
    Oct 22, 2017
    thanks for this. great info for me if it happens to my in-laws stove again. All the best
     
  8. Markus80

    Markus80

    2
    1
    Oct 2, 2020
    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!
     
  9. 73's de Edd

    73's de Edd

    3,134
    1,319
    Aug 21, 2015
    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 . . . . .
     
    Last edited: Oct 2, 2020
    Reza Rouzikhah likes this.
  10. Markus80

    Markus80

    2
    1
    Oct 2, 2020
    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 likes this.
  11. Reza Rouzikhah

    Reza Rouzikhah

    3
    0
    Aug 13, 2021
    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...
     
  12. Reza Rouzikhah

    Reza Rouzikhah

    3
    0
    Aug 13, 2021
    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.
     
    Last edited: Sep 4, 2021
  13. Reza Rouzikhah

    Reza Rouzikhah

    3
    0
    Aug 13, 2021
    photo_2021-09-13_17-40-17.jpg ....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 ....
     
    Last edited: Sep 13, 2021
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