Fridge Smell I have a hotpoint fridge freezer frost free. But the freezer back wall iced up. I have defrosted this, my fridge has a bad fishy smell was wondering if any way to get rid of this or need new fridge. No smell when the thing was unplugged.

here are lots of things that can cause cooling problems. One of the most common causes of poor cooling in a frost free refrigerator is a defrost system failure. In such a case one or the other compartment may appear to be keeping proper temperature but that too may change in a short period of time. The fridge compartment's temperature rise is usually (but not always) the first to be noticed. Frost" and "Ice"
There is a difference between "frost" (a white, snow-like substance) and "ice" (usually clear and solid). When referring to what is seen during an inspection, please keep this distinction in mind as the possible causes for each are often very different. The Defrost System
Inspecting the (usually rear) wall of the freezer compartment for a frost build up is necessary. (In the case of many GE top freezer models, check the freezer's bottom panel.) If there is a frost coating on it, it is often a sign of excessive frosting beneath it. Sometimes however the evaporator cover panel will actually need to be removed (see the illustration below) before an excessive frost build will visible.
The refrigeration system's evaporator (cooling) coil is usually in the freezer compartment. This evaporator will periodically frost over and have to be defrosted by means of a heating system. When the defrost heating system fails, the frost can accumulate to such a degree that airflow throughout the appliance is hampered. There may be just enough air circulation to cool the freezer section but that will eventually stop too.

These tempratures are pretty cold should be around 0 deg. but it sounds like you might have a bad defrost timer or defrost thermostat the frost should not come back if defrost system is working

Sounds like you have a defrost Prob. Take back cover off. Turn defrost timer in to defrost mode you will feel a click. timer may be located in fridge. ceiling or back wall if not there check bottom of fridge. behind kick plate or in back bottom of fridge. by compressor. See if heating element gets hot if not check for 120 volts at heater and defrost thermostat ( Terminator ) if not check defrost timer if you do have 120 volts check for 120 volts at heater terminals if no voltage or weak voltage replace terminator if you do have good voltage replace heating element. When ice builds up the fridge. starts to get warm turn off for 24hrs turn back on fridge. will run OK till ice builds back up.

Either the repair guy did not wire up the heater correctly or he replaced the wrong part, if the heater was good it was likley to be the defrost thermostat...I would call the repair guy back to check.

if there is frost present on the rear vertical wall of the freezer compartment then the defrost function is broken and needs to be repaired the freezer is like an ice block and yo get cooling up to the refridgerator compartment air has to be able to flow and that can't happen if the frost is not eliminated

Is the back wall full of frost? If so you have a defrost problem, most likely the defrost is stuck in the run mode. this is located above the controls area in the fridge. 

Sounds like a defrost problem. Check to see if there is any frost buildup in the back wall of the freezer. If so, it is not defrosting as it should.

• possible causes:

1. bad defrost timer
2. bad defrost heater (in freezer)
3. bad thermo switch in freezer

If you don’t know what these are then unplug the machine and let the ice melt in the freezer overnight with the door open. Then try it the next day, if is cooling fine then you need to have a service person replace one of the above items.

Check to see if there is any frost buildup in the back wall of the freezer. If so, it is not defrosting as it should.

• possible causes:

1. bad defrost timer
2. bad defrost heater (in freezer)
3. bad thermo switch in freezer

If you don’t know what these are then unplug the machine and let the ice melt in the freezer overnight with the door open. Then try it the next day, if is cooling fine then you need to have a service person (or a diy person) replace one of the above items. 

• another thing that causes this is when the coils under the machine are dirty, try cleaning them and make sure the airflow under the machine is not obstructed in any way.
  

Sounds like a defrost problem. Check to see if there is any frost buildup in the back wall of the freezer. If so, it is not defrosting as it should.

• possible causes:

1. bad defrost timer
2. bad defrost heater (in freezer)
3. bad thermo switch in freezer

If you don’t know what these are then unplug the machine and let the ice melt in the freezer overnight with the door open. Then try it the next day, if is cooling fine then you need to have a service person replace one of the above items. If it still has a problem then it might be the compressor and you should probably replace the machine.

you have a defrostion issue reed to remove the back panel in the freezer behind this panel is the evaperator coil needs to be melted down because it is full of ice and frost, ahair drier will work well,put several towells down under the bottom of the evaperator to catch water runoff, after defrosting the coil inspect the defrost heater or heaters some of these can have one or two heaters the heaters are located behind metal gaurds in the evaperator if either of the heaters are bad (both)need to be replaced, if they show good then bad defrost timer or bad defrost termination thermastat wiring diagram behind frount bottom grill