My top-freezer Amana recently started running too warm in the freezer (fridge part OK). It's from 1997, so almost just replaced the unit, but then I found the condenser fan wasn't running (bad motor) - cond. coil and compressor both hot. Put in a new cond. fan motor and now the cond. coil is much cooler - but the freezer still isn't very cold. Just measured it at 22F, ~12 hours post repair.

Compressor is running and cycling normally.
Both the new cond. fan and the evap fan are running.
Back panel in freezer is cold but no frost/ice buildup.

Are there more things I should check? Any chance something got damaged while it ran with no condenser fan (for a week or more)? Maybe I just haven't waited long enough?

Given that it is 14 1/2 years old, if it's a refrigeration system problem I'm unlikely to fix it, but having come this far I hate to give up.

Thanks in advance!