Suddenly switched off The light inside the refrigerator compartment can turn the process of searching for food into real torture, especially in the evening. Most often, equipment owners are faced with a banal burnout incandescent lamps, but in some cases the problem lies deeper - in oxidation of the contacts or a malfunction of the wiring itself.
Before sounding the alarm and calling a technician, you should try to fix the fault yourself, since in most situations this does not require special skills. The main thing is to follow basic safety rules and clearly understand the design of the lighting system of your unit. In this article we will analyze all the possible reasons for the lack of light and ways to eliminate them.
It is important to understand that LED lightinginstalled in modern models is not always repairable, and sometimes it is easier to replace the entire module than to look for a burnt-out diode. However, for classic base lamps, replacing the element is a standard procedure, taking no more than 15 minutes.
⚠️ Attention: Any work inside the electrical appliance should begin only after the device is completely disconnected from the electrical network. Do not ignore this rule, even if it seems to you that you are just changing the light bulb.
Diagnosis of the problem: why the light does not light
The first step in the process of restoring lighting functionality is to accurately determine the cause of the malfunction. If the light goes out, this does not always mean that it burned out itself light bulb. In some cases, electricity simply does not reach the light source due to problems with the contact group or switch.
There are several main scenarios that lead to the darkening of the refrigerator compartment. Often, users do not notice that the problem lies in the door switch, which is stuck or oxidized. Also, the cause may be damage to the wiring going from the control unit to the lamp.
For an accurate diagnosis, it is necessary to visually inspect the ceiling and the lamp itself. If you see blackening inside the flask, then 90% probabilitythat the element has simply exhausted its resource. If there are no visual defects, you will need to check the electrical circuit with a multimeter.
Preparation of tools and safety precautions
High-quality repairs are impossible without the appropriate tools. You don't need a complex professional kit, but you should have the basics on hand. This will allow you to carry out the replacement carefully without damaging the plastic elements of the refrigerator interior.
Be sure to prepare a dry rag and, possibly, a contact degreasing agent if you plan to clean them. When working with electricians, it is extremely important to use insulated toolsto eliminate the risk of a short circuit when accidentally touching live parts.
☑️ What to prepare before repair
Pay special attention when choosing a new lamp. The power of the new element should not exceed the power of the standard one, usually it is 15 W or 25 W. Installing a more powerful lamp can lead to melting of the lampshade and damage to the wiring due to overheating.
Replacing a classic incandescent lamp
This is the most common type of lighting in mid-price and older refrigerators models. The replacement process here is as simplified as possible and does not require disassembling complex components. Typically, access to the base is through a transparent or matte diffuser.
Carefully pry up the edge of the lampshade with a screwdriver or a fingernail, if the design allows. In some models Indesit or Atlant the lampshade is held on by latches that need to be pressed out. Proceed with caution, as plastic becomes brittle in the cold and can crack.
⚠️ Attention: If the lampshade is secured with a screw, be sure to unscrew it before attempting to remove the diffuser. The use of force is unacceptable here.
After gaining access to the base, unscrew the burnt out lamp counterclockwise. Install the new part and check the lighting operation. If the light comes on, put the lamp in place until there is a characteristic click.
What to do if the new lamp does not light?
If replacing the element did not help, the problem may be in the socket. Check to see if the contacts inside the base are oxidized. If necessary, clean them with fine sandpaper or alcohol, after unplugging the refrigerator from the mains.
Repair and replacement of LED strip
Modern refrigerators, such as Liebherr or Boschare often equipped with LED strips. They are more economical and durable, but replacing them requires more effort. LEDs rarely burn out all at once; more often the problem is in the power supply or an open circuit.
To replace the strip, you must completely dismantle the plastic box in which it is built. It is often secured with hidden latches. After removing the cover, you will see the tape itself, glued to double-sided tape, and the wires going to it.
Disconnect the wires from the contacts of the tape. If you have soldering skills, you can try to restore the connection, but it is safer to replace the entire module. Buy an LED strip with a similar supply voltage, usually it is 12 V.
Attach the new tape with double-sided tape and connect the wires, observing polarity. Reassemble the structure in reverse order. If after turning on the light appears, then the repair was successful.
Checking the door switch and contacts
If the lamp is working, but the light does not light up when the door is opened, it is most likely out of order. limit switch. This element is responsible for opening the circuit when the door is closed and closing it when it is opened.
The switch is usually located in the upper part of the refrigerator opening. To check it, press the button or stem with your finger. If you hear a click when pressed, the mechanism is probably intact. However, the contacts inside may oxidize.
| Symptom | Probable cause | Solution |
|---|---|---|
| Light does not light | Lamp burnt out | Replacing the lamp |
| The light is blinking | Bad contact in the socket | Cleaning the contacts |
| The light does not go off | Stuck switch | Development or replacement of a switch |
| Dim light | Low voltage in the network | Checking the electrical network at home |
To replace the switch, it must be removed from its seat. Depending on the model, it may be held in place by latches or screws. Disconnect the wires and install a new similar element.
Possible problems with wiring
The least pleasant scenario is damage to the wiring. The wires inside the refrigerator run through the door hinge or in the wall of the cabinet. Over time, the insulation may fray, and the copper conductors may oxidize or break.
Inspect the visible sections of the cable leading to the lampshade. If a break is found, it can be repaired using soldering and heat shrink insulation. However, if the damage is hidden in the wall of the housing, repairs will require partial disassembly of the unit.
Use a multimeter in continuity mode to check the continuity of the circuit from the plug to the socket. The absence of a signal will indicate the location of the break. In difficult cases, it is better to turn to professionals so as not to break the tightness of the circuit.
⚠️ Attention: Restoring the wiring inside the refrigerator wall requires caution. Damage to the evaporator or freon line during disassembly will lead to a refrigerant leak and expensive repairs.
Frequently asked questions and answers (FAQ)
Is it possible to use an LED lamp instead of an incandescent lamp?
Yes, you can if the base matches (usually E14). However, LED lamps may not work correctly with some door switches due to low power consumption, and the light may glow weakly even when the door is closed.
Why do the lights in new refrigerators not turn on immediately?
Some electronically controlled models have a delay of 1-2 seconds for the lights to turn on to protect the system. This is normal behavior and does not require repair.
What is the maximum lamp power that can be set?
Never exceed the power indicated on the lampshade label or in the instructions. Usually it is 15-25 W. Excess will lead to deformation of the plastic and overheating.
What to do if a newly installed lamp burns out?
This indicates a voltage surge or a problem in the contact group (sparking). It is necessary to check the voltage in the network and the condition of the cartridge.