2001 vintage, model 105.60982991

The door frame where the freezer door gasket seals against when closed is
hot.

I know this is the defrost cycle, but it stays hot. The fridge works fine.
I am assuming the defrost heater is stuck on.

Any thoughts?

I am thinking I can disconnect the heater and let the fridge run normal,
except for that. Or I can buy a replacement timer or switch if it is simple
and cheap enough.

How to I access the heater wires to disconnect, or the part needing
replacement?

Thanks.