We have a GE Fridge that's about 8 years old. Model #PFSS5NJWSS. It's not cooling in the top nor bottom. I searched this forum and ran thru the tests mentioned. Here's what I did:
1. Checked compressor pins. 10ohms measured between any two pins.
2. Inverter is getting 120v as input voltage.
3. Here's where it gets weird: When I measure the voltage at J15 on the motherboard, it jumps around very rapidly. It is between 4-6 volts, but it can go from 4.3 to 5.7 and random places in between several times in one second.
I swapped out the inverter, but still no cooling. Same voltage weirdness at J15. I have also swapped out the main board and the replacement board is giving me the same voltage weirdness at J15. (Could I have gotten a bad replacement?)
Thanks for any assistance you can provide.