Hello...New to the forum. I have a stainless Frigidaire side by side the my grandfather gave to me because he was having trouble with it. I cleaned it up (under side coils as well), and plugged in to see what it was doing. It worked well for about 3 days (temps -3 freezer & 33 fridge).....then temps on both dropped. I saw that the freezer back wall was freezing up, so did some reading & decided to trouble shoot.

1) tested continuity in the defrost heater....& tested ok.
2) tested the deforst thermostat (mutimeter for continuity whie putting it in a upright freezer....& tested ok.
3) replaced the defrost control board ( part # 242053503) with a new one. This made the fridge freezer ok for a few days....then back to a beeping on day 3 due to temps same as before freezer 10+ freezer & 50+ fridge.

I have tried resetting by killing power...defrosting quite a few times....I AM AT A LOSS!
P.S. I have photos of all but can not figure out how to attach them here. They are 6-8 mb, Too big?

Any help is how to trouble shoot from here would be greatly appreciated.


THANKS!
PHILL