[Addendum]: ## A family member said to me "oh that fridge was always overly cold in the fridge compartment!"
I came down today to find the food in the freezer section of my fridge/freezer combo (90s model I'd think)
was all going very soft (not dripping or totally soft) - BUT was still reasonably cold - much of it semi-frozen-ish. The fridge compartment food (no meat, I am a vegetarian) seemed cold enough (milk, cheese, olives)
~~ The
fridge compartment had a sheet of ice on the back inside wall, which fell off when I removed the shelves.
~~ I have now emptied freezer and put a bowl of boiling water in, and towels surrounding it, to defrost
# I am new to the defrosting a freezer game - am I right in thinking that the sheet of ice on the back wall of the inside of the fridge (clearly shouldn't be there) was "telling" the thermostat not to turn on the compressor, therefore I had a freezer defrosting situation?

# Also, is the white disc with the screw in the centre, right-hand side of one of the images, the thermostat sensor?
I know this sounds obvious, but I am not sure.. help! thank you