the advantage of these is that as long as the containment is fine, you can totally buy a broken one
BTW that is not an Aquafina fridge, there is no such thing *hairsplitting*. Its a fridge produced by a company that produces fridges, which has been branded/purchased/contracted out/franchised by aquafina, by putting in that piece of printed foil at the top. You might look up the actual manufacturer and model, that may help.
But then, you wont use it as a cooler and wont plug it in, at least not its cooling system and not the electronics it currently has. For now its a piece of furniture with excellent thermal insulation, until you transform it into an incubator
i would only keep using the lights it has, if its possible, not the fans. The fans, in an actual fridge, will be transporting the air to the heat sink, which removes heat from the inside air and transports it outside using the cooling system. So, if you turn it into an incubator, the fans will be optimized to steer the air towards a heat sink. That heat sink or heat exchanger would normally be actively cooled by the cooling system; with the cooling system offline it may still be highly effective at moving heat out of the containment and draining it away. To make a proper incubator you need to identify and seal off some areas and the fans it already has may not be very helpful.
the systems that normally suck the heat out of it during normal operation may now be issues that need to be resolved.