My fridge was often reaching 60-70 degrees but would work well when motor/fans were running; it just wasn't cooling regularly. I checked the coils, defrost, damper, and fans, and they all seemed to work, so that only left the cold control in terms of what I was willing to try to fix. (It wasn't worth messing with the compressor as the fridge is 12 yrs old.) The fridge would sometimes kick on when I tapped the cold control knob so it was a reasonable - and, it turns out, correct - guess.
I ordered this part on a Thursday afternoon and it arrived on Friday without me paying for expedited shipping. (Kudos to APP!) It was easy to replace and the fridge has maintained proper temps since. I'm SO GLAD I cancelled the delivery of a new fridge to give this repair a try.
Steps to replace in my Amana DRB1901CW Bottom Freezer Fridge (control in freezer):
-Unplug fridge or shut off circuit breaker.
-Remove clear plastic grille covering cold control and light bulb. (Push in tabs & pull down.)
-Remove cold control knob by pulling down until it comes off spoke.
-Pull cold control unit down from housing. (I used a flathead screwdriver to push in tabs.)
-Note where the three wire connections are attached, then gently slide them off. (I used needle-nose pliers.)
-Remove old part from plastic housing and replace with new part.
-Slide three dangling wire connections onto new part.
-Align knob and reconnect to spoke.
-Pop cold control unit back in, then plastic grille.
All done!
For reference, I have no repair experience and it was a simple replacement, under ten minutes. It was well worth the gamble once I narrowed down the suspect parts.