You'll need a vacuum pump, an oxy-acetylene torch some silphos silver solder. Regular plumbers solder won't work. You might try replacing the start capacitor and maybe use a kicker capacitor on the compressor before you buy a new compressor. You may find it difficult to buy freon if you're not licensed to buy it. To recharge the system, you'll need a set of gauges and hoses and a scale to weigh the freon when you add it to the system. Still want to do it yourself?
SOURCE: Kenmore (253.51399104)side by side making buzzing/humming noise
It will rattle slightly, this is normal. The ones that are burned out will sound like they have gravel in them, you can defininely tell something is wrong.
The problem with diagnosing Kenmore fridges with this problem is that there are different manufacturers. Yours is built by Frigidaire and probably has a Tecumseh compressor. We find more failed compressors with the Tecumsehs than we do with the models that have Embraco compressors. The models with Embraco's generally have more relay failures.
You should not hear the buzz/hum at startup. You will need to replace the compressor, which will be replaced at no charge to you if it is less than 5 yrs old.
If it is older than 5 yrs, you can have it replaced, but it will be almost as expensive as a new fridge. You can buy an aftermarket start device called a 3-in-1. This has a start capacitor built in to give it a little more boost on start up. I don't recommend using them unless it is a short term fix until the compressor can be replaced or if it is out of warranty and there is nothing to lose anyway.
Thanks/Mike
SOURCE: refrigerator Compressor hot to touch & fridge/freezer not cooling
you need to do an amp draw with your meter,clamp the run wire on the compressor,you should get 2-5 amp reading,any higher means the compressor is going bad,also should be a locked rotor amp(LRA) reading on comp.-mike
SOURCE: Rattling compressor on Kenmoore bottom freezer refrigerator
IF IS NOT 5 YEARS OLD YET CALL A TECH ASAP THIS MODELS HAVE A COMPRESSOR THAT ARE FAMOUS FOR LOCKING UP AND THE ONLY FIX IS TO REPLACE IT BUT FIRST DISCONNECT AND REMOVE BACK COVER AND RIGHT BY THE COMPRESSOR THERE IS A SMALL BOX ATTACHED TO IT CALL A OVERLOAD REMOVE IT AND SHAKE IT IS IF RATTLES THEN JUST REPLACE THAT PART IF IT DOESNT RATTLE CALL A TECH
SOURCE: frigidaire refrigerator model FRT21LRGW5-compressor sound is loud
Sounds like the start relay or start capacitor has failed.
Unplug the unit until you can get a replacement or the compressor will be ruined (if it's not already.).
PTC start relay is P/N 218721108 $36.49
Capacitor is P/N 218909901 $7.99
P/N and pricing from Sears Parts.
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