hello everyone newbie here. just have some questions about ac. no cold, tried to check for leaks- no leaks, refrigerant- charged it and its ok, replaced expansion valve already but to no avail. one thing i havent check is the compresssor, i dont know how to check it without removing the hose to check if it really works. is anybody in here help me understand or even give me knowledgeable advice on how to check if the compressor functions properly or in any electrical or visual checks. thanks in advance. by the way its w220067 (s350).