when you say the compressor did not turn on do you mean it was not spinning, cause if the clutch engaged then the compressor is turning. If it does not turn the compressor is siezed however, the belt would then break or squeal until it did. I would recommend you have it looked at cause the AC is very expensive to fix if you screw it up.
2005 320 CDI
2006.5 VW Jetta TDI
1991 560SEL (179000 Sold)
1972 280SEL 4.5 ('The Lead Sled' 320000 miles when sold.)
1972 220D (225000 when sold)