Samsung Sr 39 nxa Refrigerator

[neve]

Hi all Help needed please Samsung nightmare . This fridge is a old night mare .About 4mts it kept on having defrost problems . the thermostat ,thermal fuse & timer was changed. it stopped for a while.Next problem arise the timer not clicking from defrost to motor run .All the voltages are present at the timer terminals .So the timer has to be manually turn to comp run, not going on Defrost & vice -verse.The timer motor seems not to be working although new one was bought.could any one help me with this problem.

[tonto33]