Samsung microwave troubleshooting

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Samsung M series microwave troubleshooting

SYMPTOMCAUSECORRECTIONS
Oven is dead.
Fuse is OK.
Mo display and no operation at all.
1.Open or loose lead wire harness
2.Open thermal cutout (Magnetron)
3.Open low voltage transformer
4.Defective Ass'y PCB
Check fan motor when thermal cutout is defective.
Check Ass’y PCB when LVT is defective.
Mo display and no operation at all. Fuse is blown.1.Shorted lead wire harness
2.Defective primary latch switch (NOTE 1)
3.Defective monitor switch (NOTE1)
4.Shorted HVCapacitor
5.Shorted HVTransformer (NOTE2)
Check adjustment of primary, interlock monitor, door sensing switch.
NOTE 1: All of these switches must be replaced at the same time.
(refer to adjustment instructions)
Check continuity of power relay contacts and if it has continuity, replace power relay also.
NOTE 2: When HVTransformer is replaced, check diode and magnetron also.
Oven does not accept key input (Program)1.Key input is not in-Sequence
2.Open or loose connection of membrane key pad to Ass'y PCB
3.Shorted or open membrane panel
4.Defective Ass'y PCB
Refer to operation procedure.
Replace PCB main.
Timer starts countdown but no microwave oscillation.(No heat while oven lamp and fan motor turn on.)
1.Off-alignment of latch switches
2.Open or loose connection of high voltage circuit especially maqnetron filament circuit
3. Defective high voltage components
H.V.Transformer
H.V.Capacitor
H.V.Diode, H.V.Fuse
Magnetron
4.Open or loose wiring of power relay
5.Defective primary latch switch
6.Defective power relay or Ass'y PCB
Adjust door and latch switches.
Check high voltage component according to component test procedure and replace if it is defective. Replace PCB main.
Oven lamp and fan motor turn on1. Misadjustment or loose wiring
of primary latch switch
2. Defective primary latch switch
Adjust door and latch switches.
Oven can program but timer
does not start.
1. Open or loose wiring of secondary
interlock switch
2. Off-alignment of primary interlock
3. Defective secondary interlock S/W
Adjust door and interlock switches.
Microwave output is low:.
Oven takes longer time to
cook food.
1. Decrease in power source voltage.
2. Open or loose wiring of magnetron
filament circuit. (Intermittent oscillation))
3. Aging of magnetron
Consult electrician.
Fan motor turns on when plugged inLoose wiring of door sensing switchCheck wire of door sensing switch.
Oven does not operate and return
to the plugged in mode.
Defective Ass'y PCBReplace PCB main.
Loud buzzing noise can be heard.1. Loose fan and fan motor
2. Loose screws on H.V.Transformer
3. Shorted H.V.Diode
Tighten screws of fan motor.
Tighten screws of H.V.Transformer.
Replace H.V.Diode.
Turntable motor does not rotate.1. Open or loose wiring of turntable motor.
2. Defective turntable motor.
Replace turntable motor.
Oven stops operation during cooking1. Open or loose wiring of primary
interlock switch
2. Operation of thermal cutout(Magnetron)
Adjust door and latch switches.
Sparks1. Metallic ware or cooking dishes
touching on the oven wall.
2. Ceramic ware trimmed with gold or
silver powder also causes sparks.
Inform the customer.
Do not use any type of cookware with
metallic trimming.
Uneven cookingUneven intensity of microwave due to
its characteristics.
Wrap thinner parts of the food with
aluminum foil.
Use plastic wrap or cover with a lid.
Stir once or twice while cooking
foods such as soup, cocoa, or milk.
Noise from the turntable motor
when it starts to operate.
Noise may result from the motor.Replace turntable motor.

Samsung SMK microwave troubleshooting

PROBLEMSOLUTION
The display and/or the oven is
not working.
Make sure the plug is properly connected to a grounded outlet.
If the wall outlet is controlled by a wall switch, make sure the wall
switch is turned on.
Remove the plug from the outlet, wait ten seconds, and plug it in
again.
Reset the circuit breaker or replace any blown fuses.
Plug a different appliance into the outlet. If the other appliance
doesn’t work, call a qualified electrician to repair the wall outlet.
Plug the oven into a different outlet.
The display is working, but the power won’t come on.
Make sure the door is closed securely.
Check if any packaging material or anything else is stuck in the door
seal.
Check if the door is damaged.
Touch Cancel twice and enter all the cooking instructions again.
Is the power going off before
the set time has elapsed?
If there was a power outage, the time indicator will display: 88:88.
If no power outage occurred, remove the plug from the outlet, wait
ten seconds, and plug it in again. Reset the clock and any cooking
instructions.
Reset the circuit breaker or replace any blown fuses.
Cooks food too slowly.Make sure the oven has its own 20 amp circuit line. Operating
another appliance on the same circuit can cause a voltage drop. If
necessary, move the oven to its own circuit.
Has sparks or arcing.Remove any metallic utensils, cookware, or metal ties. If using foil,
use only narrow strips and allow at least one inch between the foil
and the interior oven walls.
The turntable makes noise or
becomes stuck.
Clean the turntable, roller ring and oven floor.
Make sure the turntable and roller ring are positioned correctly.
Causes TV or radio
interference.
This is similar to interference caused by other small appliances,
such as hair dryers. Move your microwave (or appliance) away from
appliances, such as your TV or radio.

Samsung FW microwave troubleshooting

ProblemSolution
This is normal.• Condensation inside the oven.
• Air flow around the door and outer casing.
• Light reflection around the door and outer casing.
• Steam escaping from around the door or vents.
The oven does not start when you press the I button Is the door completely closed?
The food is not cooked at all• Have you set the timer correctly and/or pressed the button?
• Is the door closed?
• Have you overloaded the electric circuit and caused a fuse to blow or a breaker to be triggered?
The food is either overcooked or undercooked• Was the appropriate cooking length set for the type of food?
• Was an appropriate power level chosen?
Sparking and cracking occur inside the oven (arcing)• Have you used a dish with metal trimmings?
• Have you left a fork or other metal utensil inside the oven?
• Is aluminium foil too close to the inside walls?
The oven causes interference with radios or televisions• Slight interference may be observed on televisions or radios when the oven is operating. This is normal.To solve this problem, install the oven away from televisions, radios and aerials.
• If interference is detected by the oven’s microprocessor, the display may be reset.To solve this problem, disconnect the power plug and reconnect it. Reset the time.

SAMSUNG AMW series microwave troubleshooting

ProblemSolution
Neither the oven’s display nor the oven operate• Properly insert the plug into a grounded outlet.
• If the outlet is controlled by a wall switch, make sure the wall switch is turned on.
• Remove the plug from the outlet, wait ten seconds, then plug it in again.
• Reset the circuit breaker or replace any blown fuse.
• Plug another appliance into the outlet; if the other appliance doesn’t work, have a qualified electrician repair the outlet.
• Plug the oven into a different outlet.
The oven’s display works, but the power won’t come on• Make sure the door is closed securely.
• Check to see if packing material or other material is stuck to the door seal.
• Check for door damage.
• Press Cancel twice and re-enter all cooking instructions.
The power goes off before the set time has elapsed• If there has not been a power outage, remove the plug from the outlet, wait ten seconds, then plug it in again. If there was a power outage, the time indicator will display “ ” Reset the clock and any cooking instructions.
• Reset the circuit breaker or replace any blown fuse
The food is cooking too slowlyMake sure the oven is on its own 15 amp circuit line. Operating another appliance on
the same circuit can cause a voltage drop. If necessary, move the oven to its own
circuit
You see sparks or arcing.Remove any metallic utensils, cookware, or metal ties. If using foil, use only narrow
strips and allow at least one inch between the foil and interior oven walls.
The turntable makes noises or sticks• Clean the turntable, roller ring and oven floor.
• Make sure the turntable and roller ring are positioned correctly
Using your microwave causes TV or radio interference.This is similar to the interference caused by other small appliances, such as hair dryers. Move your microwave further away from other appliances, like your TV or radio.

Error codes and troubleshooting