Jenn Aire side by side, both sides warm, PTC... Jenn Aire side by side, freezer and refridgerator

Question

Jenn Aire side by side, freezer and refridgerator stopped working. Both side warm. Fan is blowing. Replaced PTC Overload/Relay. Still not cooling. Guessing it's the compressor. I hear clicking but the compressor does not seam to start. I am considering try to change the compressor myself. Part is expensive and would hate to take that on if it's not the compressor. Any suggestion?