I have an amana abb1924des. A few days ago it stopped cooling. It was making click and buzzing sound. I changed the overload relay and capacitor. The refrigerator started working again for a few hours. The click and the buzzing is back and it's no longer cooling. Is this a case of a defective part? Is it worth trying to fix this fridge?

I believe that buzzing sound is coming from the start relay and the click is the overload clicking because the compressor is trying to start but cannot because the start relay is defective, You may have a run or start capacitor bad also, Thanks Sea Breeze
Model Number?

When a start relay and the coil that opens the water for the ice maker or the water dispenser begin to weaken they some times buzz. Its possible you will need to either replace the=> 67003753 Water Inlet Valve


or the compressor=> 67005560 Relay or overload with run capacitor


Here is a parts manual for your=> AFD2535FES and a user manual=> HERE If you have questions please ask thanks Sea Breeze

I have been doing refrigeration for over 30 years and I have never seen a compressor with a chip inside of it. Have you tried cleaning the condensor coils? I almost sounds like you have a weak start capacitor. Let me know if i can help you any futher.

the ptc overload on the compressor is bad and trying to reset itself

that sound is the relay/overload. it is trying to start the compressor. the problem is either that relay or the compressor itself

Start capacitor,start relay, overload and windings in compressor need checked. When clicking like that the compressor is overheating and could damage the internal overload. Send model number so I may tell you the correct parts. I will be here if you need, Sea Breeze

Something has stopped your compressor. The part could be the start relay, start capacitor, overload or the defrost control board. where are the buzzing sounds coming from ? Sea Breeze

You may have a bad relay/overload part number 12555902 runs about $15 but if the compressor is going bad it may not work.If you take the relay/overload off  turn it into your hand and shake it if you it sprinkles out like a pepper shaker go with the OEM part afore mentioned,but if it sounds solid and nothing comes out go with a hard start(SUPCO RC0410 also about $15) it will buy you at least another couple years in which to shop around for a replacement or save the money for a new compressor.You can call Amana to check on the warranty but most only had five years on sealed system.

Sounds like the compressor is in thermal overload. Let it cool down completely and meter the starting amperage on start to run. The compressor could be seized or it's windings could be shorted to ground (checking the resistance between the windings terminals on the compressor while unplugged will determine this.).

compressor has failed. not a diy job