My kegerator is not cooling my beer enough

[HiBobM]

I have a side by side frig that I made into a kegerator. The freezer is perfect for mugs and the frig is big enough to put bottles in as well as a 1/2 barrel or multiple 1/6 barrels.

My only problem is that the beer is not cooling below 42 degrees. A refrigerator thermometer says the frig is 30 degrees. Have any of you had this problem? Any ideas on how to fix it?
Thanks

 

[chowser]

The keg should eventually reach equilibrium with the air temp in the fridge. I presume you're measuring temp of pour? Perhaps the room temp beer in the tap is messing up your measurement.