Q45 AC diagnosis

[OneTimePoster]

I have no ac. The self diagnosis (HA-40,41) is fine. Nothing visible in the sight glass. The low pressure pipe does NOT get cold at all. I can hear and see the clutch engage on the compressor. And the AC went awry while I fiddling with the radio/taking it out (could be coincidence, just figured I'd mention it given if there might an obvious electrical cause that could be related).

Is there anything else this could be aside from a bad compressor? How would I diagnosis? Thanks.

[Highway Q45]

Don't take this wrong. I had problems putting a new headunit into my 91. Somehow I blew a fuse (top left) and lost the clock, odometer, and passenger seat controls. I finally pulled all of them under the dash because they all looked good until they were pulled. I know it sounds kinda simple if you haven't tried it yet. Good Luck