Is the compressor still working? I see you have a new compressor, why did the old one fail? If the system was not cleaned out/flushed, you can cause a new compressor to fail in a short time. Otherwise the new charge probably leaked out. I would have a shop check for leaks using dye/goggles and a R134a 'sniffer'. Could be leaking from the hoses, condenser, evaporator, service ports, or any of the connections from the recent repair.