Hello Melody Vandiver....
I'd go back to the full defrost (THAT BULGE SHOULD RELAX).
BE PREPARED for some un-controlled "defrost" WATER
Towels... wet/dry vacuum... etc.
Somehow (I think) you have a water deposit in the lining of
your refrigerator... Since the INTERIOR (REFRIGERATED ENCLOSURE) SHOULD BE AIR tight...
It might prove to be SERIOUS CHALLENGE to find ... remove and re-seal the EXTERIOR case (WIRES & TUBE passages into the
Carefully inspect doors (drawer if you have them)... that their gaskets have full contact all the way around & the doors are square with the case.
Do the "dollar bill
" test (brown paper sack is much cleaner & nicer than MONEY)... pull a piece of paper... all around the closed door. You should feel resistance at every location"
It can occur if the refrigerator was tipped on it's side during transport... or you have sustained a CASE AIR-LEAK that is allowing FROST TO BUILD UP in an UN-HEATED (DEFROST HEATER) area.
If my hypothesis is EVEN NEAR close...
This is most likely adjacent to your freezer compartment.
(although I'm at a loss as to why it would bulge OUT rather than into the softer and more flexible plastic
(I assume.. no make or model came through with your question) interior lining.
Use no external heat sources on the unit...
Unless you are really good at taking PICTURES & NOTES... this might be a job for a trained "SERVICE" person.
I ORDNARILY ENCOURAGE doing-it-yourself....
but your problem sounds pretty drastic.
I'm just and old side x side guy so I don't speak dual evaporator.. web-enabled remote video-access refrigerators...
(nor care too (twice retired from advanced electronics/optics)... these latest gadgets seem a bit 'round the bend 4 A Frig))).
Good luck... comment me back if you are going in...
and remember to take pictures & notes
so you can get every tube & wire PRECISELY BACK from whence it came!!
service (I don't personally like'em (IMLTHO)).
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