79571053011 Kenmore fridge compressor FC75LBNA failed

[mirak27]

HELLO,
My  79571053011 Kenmore refregirator , the Original compressor FC75LBNA failed, it seams the LG TCA38151706 universal compressor is the required replacement  , and needs the Software: CJT30000002 jig for the PCB mother board update.
Opened the enclosure cover , I could see two mother boards : EBR656402 and EBR650027 ,
Question:
1-   Which of the two mother bords are to be SW updated ? or both ?
2-   If so , is the mother board updatable ? could not find out the information on LG bulletin ?
Thank you in advance for the help !
Mirak .

[exIL8zvD-n6NV]

Hey Mirak, what's your progress on this? I'm in the same boat and trying to figure out do I need to order a replacement compressor with the jig, or this board isn't updateable, so I need to find the original compressor on some junk sale.

[mirak27]

Hi exIL8zvD-n6NV :
So far still, no answers, it looks like the MB is not updatable , so need to replace with the same original compressor (FC75LBNA)

[exIL8zvD-n6NV]

I see, but that's sort of suboptimal, these compressors aren't manufactured anymore so one will have to rely on a rare stockpiled compressor sale and the price is pretty high (what I've found was $350 plus shipping), and another issue the replacement one will also probably fail prematurely.

[beaneo18]

Hi, the upper board is the inverter board that supplies power to the compressor. The lower is your main board. The white connector that is open on right side is the software upgrade connector. Connect the white connector of jig to this connector and it will update. If it fails, use the red connector on the jig. Do not use the original compressor again as it WILL fail. Hope this helps.