Thanks for the quick reply. You are right that these things are pretty scarce. Found one on eBay for $799.
Based on your experience and the problem I'm having, is this something that I should consider a ticking time bomb or, given the box is still cooling, can I treat this as a minor annoyance and deal with the noise?
On additional tidbit of info: I noticed some cycling going on when I was putting things back together. One of the four relays on the board is clicking but I can't tell which one. The on/off cycle now appears to be variable 30-45 sec but sometimes goes for a couple minutes.
Also (bonus question here) would you by chance know what part(s) usually fails on the board?
Just wanted to follow up on my issue. Thanks to you I got the refrigerator back in service yesterday evening only 24 hours after you responded to my questions. It was indeed the control board. Thanks to Google, I found a company that repairs these boards and it turned out they are somewhat local. I put some dry ice in the refrigerator and freezer, pulled the control board and drove it to the repair facility.
The company is FixYourBoard.com in Austin, TX. They charged $220 for the repair and offer a 2-year warranty. I paid a $50 expedite fee and the board was repaired same day. I highly recommend them. Apparently they repair a lot of these.
As an aside and to cover my butt just in case, I called a local appliance repair company. They couldn't get anyone to me until Wed. The tech would have to troubleshoot the problem (wouldn't take my word for it) and if it was the board, they would have to try to find a replacement. If they couldn't find a replacement in 48 hours the tech would return and pull the board and they would send for service (2-4 weeks). Board repair plus three service calls would have been close to $700.
Thanks again for your help. You helped make this an easy and quick repair.
Awesome, I'm very glad you were able to get everything resolved. Thank you for posting back and letting me know your situation.