I bought I samsung refrig. A little over 2 yrs. Ago, about 4-6 ago, the refrig. Temp. Started rising, beside the fact that the water dispenser hasn't worked for a while, (thought it might be the $40.00 filter so we replaced it, and it didn't change anything). We need the refrig. To keep the food cool. We took off the back panel and the coils were fozen, we took a hairdryer and for hours defrosted the coils, the refrig. Worked for a few months, but now we are going through the same problem, the temp. Is blinking and rising and we are losing food, and can't buy food for the refig. I will never buy anything again with the name samsung, thought this name brand would be reliable. When you buy a brand new frig., you would think that it would last at the least 10-15 yrs.