This is one that was made by Samsung.
Back panel air ducts had ice build up. Large piece of ice on upper right above coils where refrigerant tubes enter(not sure if that is relevant). Pulled off panel and thawed everything out. Evaporator Fan runs fine when 12VDC applied, but not when it is plugged in. I read that when the condensor is running the evaporator fans should be running, is this correct? When the condensor is running there is no voltage to the refrigerator evaporator fan connector.
Both freezer Evaporator fans also is not running. No output voltage at either connector. Fans work fine when 12VDC applied separately. Condensor fan works though. 12VDC output from power supply is OK.
Everything gets cold. Everything else seems to work fine.
Does anyone have access to the service manual RF267A RF26XA SERVICE MANUAL.pdf if so could you please upload it somewhere and send me a link. Don't know if it would help, but would like to check it out.
Or is there any diagnostic between pins on the CN75 connector on the motherboard to check if it is a motherboard problem or a problem in the wiring in between it and the fans.? Is there anything on the board that can be fixed?
Is it a bad main control board or something else?
Thanks for the help, I appreciate it.