Carrier V Rooftop Unit

[wagwar]

More bad news today.

The low cool and low fan cycle on one of my Carrier V rooftop A/C units does not work. The High cool and High fan works fine. I was told that this was most likely a problem in the circuit board - not something simple like a bad capacitor.

Does anyone know where I might find parts for these old units? Carrier got out of that business years ago.