Describe your danby dwc283bls top fan does not work. after removing the fan ,the problem is no output from the logic board, defective board or another part,sensor etc.????

go to sears parts direct and enter your DWC283BLS you will have the plan and number parts you need

There are 3 fans in this unit. One high up in the back panel for defrost (which should seldom run), and two inside the box with the LED's that divide the compartment into upper and lower areas. All are interchangeable. Replacement parts are available through Sears Parts Direct.
If you intend to do the repairs yourself, make sure the cooler is unplugged when working on it. To gain access to the two fans in the divider box, remove the wine racks to give you more room, and just remove the four screws holding the top of the divider box on and lift it off. One of the fans is directly behind the PC board and the other is inside the 8x10 foam box to the rear of it. Be careful with this foam box, it is delicate. To gain access to the fan inside, use a thin bladed knife or razor blade to delicately separate the top from the sides.
Before replacing fans, try tracing the leads from the fans to the PC board and swapping the plugs for the fans on the PC board and plugging the cooler back in to see if any of the fans are working. Make sure you restore the plugs to their original positions. If all three fans are not working, the problem may be the PC board or the thermocouples.

Just take a few pictures of the wires and where they attach to the board prior to disconnecting anything. Try googling the manual.

Removal of the board is pretty easy and the replacement board runs $35-72.

http://www.searspartsdirect.com/partsdirect/part-model/Danby-Parts/Wine-beverage-cooler-Parts/Model-DWC283BLS/3055/0169000?pathTaken=&prst=0&shdMod=DWC283BLS

Part number depends on which fan you are talking about. This has a diagram and list of parts.
If you need further assistance please feel free to comment.

Where is the noise coming from? Check the fan at the back of the upper compartment. They seem to be defective and die after about 3 years (just outside of warranty... how convenient). I'm dealing with the same issue now. (As search on the internet indicates that we're not alone!) When its making that noise, try pressing the back plate around the little fan and see if it changes the noise.

the top fan is not suppose to run all thetime only when its too cold and the heater kicks then the top fan will come on,you probley have a leak in the system

This product has been discontinued
i dont think many danby units are parts supported
more likely generic after market parts fitted by air con mechanics do the job
relay first might be a thematic one and an compressor motor fan relay
then check gas pressure

https://www.winecoolerdirect.com/danby-wine-cooler-dual-zone-dwc283bls/DWC283BLS.html

Service Manual.pdfwww.reliablepartsinc.com/danby/Manuals%20.../Service%20Manuals/DWC282%20%...

The problem is likely with one of the two fans. A new fan is available from Danby (1-800-263-2629). My noisy fan is the condensor fan located at the bottom rear of the device. After removing the cooler from under the cabinet, the source of the noise was obvious. You will need to tell them whether it is the upper fan or lower fan. Leave the cooler upright for a few hours before you plug it in so that you do not damage the condenser. Price for the fan from Danby is $20.15 including shipping. Users Manual is available at http://www.danby.com/manuals/DWC512BL.pdf -Ron

call Danby at 800 263 2629, you can order parts from them

Does it have a compressor and does it run? If so there is probably a relay on that board that is bad or only runs with the compressor.