LG lmx25964 refrigerator is not showing any error codes but stopped cooling. 'unplugging' method makes loud bang when power restored. There is no other abnormal noises. Is it compressor?

Error code list is given on LG Official website
LG Refrigerator - Error Code List ' LG USA Support

Error code P5 is not listed in error code list. Please mention exact error code.

Are fans working? Any frost buildup on inside back freezer wall?

This model has trouble with ice building up behind the freezer doors preventing them from closing all the way. You may need to defrost.

when half of the display goes out, it is giving you an error code telling you what is wrong with the fridge.Unplugging it simply resets the computer until the error comes back typically within a few hours.

without knowing what is lit up, it is difficult to help you so I would recommend putting the error code "which bars are lit up" in a comment so we can diagnose further

LG refrigerator "Er IF" error code is the "Icemaker Fan Error" message.T his error code indicates a problem with the fan that controls the unit's ice production. If this problem occurs because of ice buildup, unplugging the unit for 3 to 4 hours and allowing it to thaw may fix the issue. Call customer service if that doesn't work.

The compressor is that black casing you see at the bottom of your refrigerator - inside this sealed case is the motor assembly which stits on 3 or 4 springs that act like a cushion - you have a little gap at the bottom where the lubricating oil is present. Your springs have likely worn out and when the compressor shuts off the assembly is banging against the rigid casing make that loud "klonk" or bang noise. It IS normal for compressor to make some faint "tick-tick-tick...tick.....tick" when shutting off, but loud banging, bell sounds, etc, means the assembly is banging on the case from the inside - you can indeed live with the noise, your compressor will function normally, probably for months, or even years - it can also keep wearing out and one day the noise might get very loud (like a very high humming noise) - There is NOTHING that can be fixed, you either pay $400+ to change the compressor or buy a new refrigerator - If you DO replace a compressor usually the replacement will be noisier - Keep a thermostat inside your refrigerator at all time to make sure your compressor is still keeping your refrigerator and freezer cool.

it the def t-stat, def. thermistor, or def. fuse whatever lg decides to call it this week that is causing your issue

If you need further help, reach me via phone at https://www.6ya.com/expert/marlon_56d9a24f02585258

Check and clean the condenser. Unplugging the system allows it to cool off. when you plug it back in it will cool until the heat rebuilds if not rejected through the condenser. Make sure the condenser fan comes on when the compressor runs. A faulty fan motor will cause the same type of problem.

You are seriously frozen up. Defrost the unit completely. Then, be aware that 'window shopping', leaving uncovered liquids in the box and poor door sealing (too heavy a load on the door ... too much on shelves) can cause condensation. Defrost with hot air or leave unplugged and open for about 2 days. You'll see alot of water come out.

Hi. Error FF is your Fresh Food Fan. Otherwords, the evaporator fan motor has failed. You should replace the motor and motherboard. You may get by just replacing the motor. Sears doesn't manufacture the refrigerator. They just pay extra to have Kenmore put on it. Its the manufacturer that needs to back their equipment. If you bought it from Lowes, you can't hold Lowes responsible for the ongoing issue. They sell the same refrigerator. Anytime this model refrigerator displays an Error code, unplug it for 5 miniutes and replug it. Sometimes it was a computer misfuction. Good luck! Mack