I need help troubleshooting my Avanti wine cooler WC600CL!! It stopped cooling, how can I fix it?

https://manualsdump.com/en/manuals/avanti-wc1500dss/66172/12
The above has a troubleshooting matrix.

Power supply: Check if the wine fridge is receiving power from the mains supply. If it's not, there might be a major issue with the mains power or the PSU circuit board in the product that'll likely need replacing if it's faulty.
Condenser fan: The condenser fan is designed to cool the condenser and condenser coil within the Avanti wine cooler. If it doesn't function, the condenser and coil can overheat - causing the internal area of the wine fridge to heat up too. Take a look at the rear of the unit and make sure the condenser fan is spinning freely and not blocked (by dust / dirt) or making excessive noise due debris or a blockage.
Thermostat: If the Avanti wine fridge thermostat is working correctly, it's responsible for making the condenser, evaporator, fan, and compressor work - so it's super important! The thermostat also allows you to control and adjust the temperature of the wine cooler so if the reading on thermostat is inaccurate (or flat out wrong) the wine cooler temperature will likely be inaccurate too.

Why Is My Avanti Wine Fridge Not Cooling (And How To Fix It) - Expert Wine Storage

either needs freon or compressor faulty

I've added a link for an Avanti ewcb,
http://www.retrevo.com/support/Avanti-EWC16B-Refrigerators-manual/id/867bh235/t/2/. There you can find a complete manual on the product which will help you to locate where the problem is coming from. hope I've helped!

if you are handy go to a refrigeration supply hoese and buy a 3-1 pack remove the wires from the compressor let it cool if hot and hook to 120 volts wiring it shows you on the package..........luck

same problem, can not fix. Had a authorized service tech who said that you can not add freon to this unit, the only option is to plant flowers in it.

piece of junk, can not be fixed. Join all the other ones who have bought this unit.

check if you get power by the motor if no power change the thermostat

Is it cooling ok?Where did you find the oil? If is not cooling and you see an oil spot inside or outside where the compresor is that means there's a refrigerant leak.

pull it out and lay hands on the compressor and see if its running if not replace the thermostat

contact avanti cust svc they are easy to work with and want you happy tell them your promb but i suspect you need a new themostat