Hi to you from David.
Have you ensured the small drain off hole at the back of the fridge is not fouled up with food or FROZEN. This leads down to the compressor and is evaporated away under normal conditions
When you defrosted , did you just unplug and leave for a period of time? How Long?
Hi the drain hole is clear. I left the fridge off for a couple of days. I have switched it back on and the water dispenser works so i assume it was frozen up
Yes great. Sometimes when they are really iced up you need to remove the panel at the back of the fridge, inside . This will expose the condensor and you can see if it is totally iced up. This could be the reason you had noise as the fan hits the built up ice, and 2 days may not have defrosted this area fully. Once exposed, a hair dryer does the trick.
Please replace the word CONDENSOR with EVAPORATOR
the evaporator is completely defrosted but was very wet.
This sounds very much like your system has lost its gas. This is a common fault on Samsung american style fridges and costly repair too. I would suggest you get a quote for regas over phone, but the problem is that if your system has internal leak, then your wasting your money. If you go the repair route you need confirmation that there is no leek to your system. I would be very carefull about spending money on repairs unless your engineer gaves you a 12 month warranty against leaks. These are notorious.
i have seen something online that suggests that the temperature sensor needs to be moved and i've looked over the evaporator and cannot see any holes/perforations. does any of this make any sense?
From your description, I prefer to think your system is short of gas. Your temperature probe is usually clipped hard against the Evaporator. They are relatively cheap to replace if you think it may be faulty.
Thanks for your advice. Thats helpful
Your welcome. Best of luck regards David.