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I have a PGSS5PJXC GE refrigerator that is having cooling issues. The fridge temperature is suppose to be at 37 degrees and is holding around 39 degrees. The freezer is suppose to be at 0 degrees but it's at 24-28 degrees. I have replaced the inverter last year and it worked fine, thanks to you guys! I first did a visual inspection of the main boards (mother board) front and back and everything look fine. I then checked voltages to and from the board. I have checked the voltage for it at the J15 plug of the main board and it was fine. Also checked voltages from the J2 plug for the condenser fan, evaporator fan, fresh food fan, supply voltage and they all read normal. I checked the thermisters off of J1 and they all seem to be within operating ranges. There was one thermister that read only 4.4kohms off of pin 5 and 2 off the J1 but found out is was a thermister that resides under the fridge towards towards front near the grill base cover. Although the freezer thermister (pins 5 and ) read 17.7ohms at a temperature of 35 degrees. Another one being the fresh food thermister at pins 5 and 1 read 15.5 ohms while the thermister was placed in a cup of ice water which temperature read 15.9 ohms while being placed in a cup of ice water which read 33 degrees. So now I don't know what to do. I feel cold air coming thru the vents in the fridge and freezer. I guess the only thing I can do is to remove the back wall cover to expose the check the freezer coils. I should check for a light frosting on them and put that thermister in ice water and recheck the ohms on that. However, when I checked that thermister before it read 15.2ohms at 32 degrees. I am sort of desperate here so any help or suggestions would be greatly appreciated. And whatever parts I order from you guys can you tell me if I am able to return them if that wasn't the issue? Thanks in advance for your help. You guys are my last hope. I am disabled and a vet and can not afford a technician.