Your posts are a bit confusing........
You had a cooling issue last season. Replaced OEM thermistor with a Snip-the-tip and it worked for 'awhile'.....so guess it really didn't because you then stated
" I had unplugged the thermistor and it seemed to work OK for the remainder of last season".........with thermistor unplugged fridge should have cooled continuously and food section should have froze....w/o thermistor plugged in noting to sense temps.
Now you have plugged thermistor (with snip the tip sensor on OEM thermistor wires to lower board) and NO COOLING.
AND you can hear 'gurgling' noises
First off.......'gurgling' noises can be due to BLOCKAGE in cooling unit. NOT GOOD
Second.......need to unplug that thermistor and operate fridge 24 hrs. (force cool operation) then check temps (glass with water and thermometer). If freezer temp and food section temp are OK then the thermistor needs replaced.
IF freezer/food section temps are still warm........need a new lower board
AND If freezer temp is OK but food section is still not cool...........cooling unit is blocked and needs replaced
