push button on dash for A/C does nothing

What is your question?

Had A/C worked on at a local shop.Compressor clutch had went bad but I went ahead and had compressor and drier replaced.System was serviced but a/c wont come on.tech can suppy power direct to coil and system blows cold.He says he got lost after that but thinks a/c amplifier is bad .I dont want to THROW parts at t to see what works