Stabiliser Repair: Power Switch Problem and Solution by Installing a New One.

How are you all? I hope everyone is well by the grace of Allah. I am also well with your prayers. Today I will share with you how to repair a stabiliser suite to run a refrigerator.

Edited with Canva.

Recently, a customer gave me an old Walton voltage stabiliser to fix. His complaint was that the device was not turning on and his refrigerator had turned off. I took it home and tested it, and the main problem was a burnt rocker switch. After replacing the switch, the device started working again.

During this servicing, I examined every important component inside the voltage stabiliser. In this post, I will tell you what components are inside a voltage stabiliser and how they work.

🔢 List of components and practical introduction:

🔹 1. Transformer:

It takes different levels of input voltage and increases or decreases the output voltage as needed. It is the heart of the stabiliser.

🔹 2. Relay:

Disconnects or reconnects the load when the voltage fluctuates. Its main function is to ensure device safety.

🔹 3. Voltage Sensor Circuit:

Monitors the input voltage and controls the relay accordingly. It can be called the "brain" of the stabiliser.

🔹 4. Fuse:

Protects other parts by cutting itself in case of excess current or short circuit.

🔹 5. Rocker Switch:

Used for manual on/off. Some switches have lights, which indicate the position.

🔹 6. LED Indicator:

Helps to understand whether the stabiliser is on or the output is OK.

🔹 7. Voltmeter/Display (if any):

Shows the input and output voltage measurements, which is helpful for the user.

🔹 8. Heat Sink:

Keeps the device cool by absorbing excess heat and making it last longer.

I am starting my tutorial post.

🔧 Step 1: Opening the Stabilizer

First, I carefully placed the stabiliser on my worktable. Then, using a screwdriver, I opened the stabiliser casing so that the internal components could be observed.

🔧 Step 2: Internal Inspection and Input Testing

After opening the stabiliser, I first cleaned the dust accumulated inside it thoroughly. Then, I provided the input connection through a connector — where I supply 220 volts AC power.

Using a tester, I made sure that the voltage was present at the input section, and there I detected the impressed voltage (current flow).

However, when I checked the voltage on the output line under the rocker switch, there was no output. From this, I understood that the problem was somewhere in the switch or the output circuit.

🔧 Step 3: Removing the faulty switch and preparing a new switch

After confirming the source of the problem, I remove the old rocker switch from the stabiliser. To do this, I first disconnect the 220-volt input line connected to the switch and also disconnect the output line going to the transformer.

Then I bring a new, quality rocker switch — which I prepare to replace the old one in the stabiliser.

🔧 Step 4: Pre-application of solder to the switch pins

Before replacing the switch, I bring soldering wire and soldering paste. Then I pre-apply a small amount of solder to the pins of the new switch.

As a result, it is possible to easily connect the wires when making the connection, and the joint is strong and long-lasting. This is a necessary step, especially to ensure the durability of the parts.

🔧 Step Five: Replacing the New Switch and Completing the Connections

After completely removing the old rocker switch, I carefully place the new switch in the casing of the stabiliser. Then I connect the 220-volt input voltage line to the designated input pin of the switch.
I connect the two output wires that come from the transformer to the output part of the switch correctly.
In this step, I make each connection very carefully so that there is no risk of loose connections or short circuits.

🔧 Step Six: Verifying Connections and Testing Voltage

After completing all the connections, I provide 220 volt input voltage. Immediately, the switch gets power, and an orange LED indicator light lights up — indicating the active status of the stabiliser.

Then the input voltage starts to be displayed on the first display of the stabiliser. In about 5 to 10 seconds, the relay automatically cuts in and the output voltage is activated.

The output voltage is clearly visible on the next display, indicating that the stabiliser is now fully operational and functional.

✅ Final Step: Reinstalling the Casing and Handing Over

After checking and confirming all the circuits, I carefully reattached the casing on the stabiliser. Then I prepared the device to hand over to the person who gave it to me for repair. He can now use it in the fridge again, InshaAllah.

Finally, as proof of my work and as part of the documentation, I took a selfie of myself so that the success and satisfaction of the work can be captured.

Video Tutorial: To better understand the practical part of this tutorial, you can watch the video below.

✅ Stabilizer Service Report

Serial	Brand Name	Problem Type	Problem Identification	Solution	Parts Used	Result
1️⃣	Walton	Switch Not Turning On/Off	Internal Connection of Rocker Switch Broken	New Rocker Switch Replacement	Rocker Switch, Solder Wire, Paste	Input and Output Voltage Running Properly
2️⃣	Walton	Output Display Not Turning On	Current Not Going to Switch's Output Line	Re-solder Output Connection from Switch	Screwdriver, Multimeter, Indicator Light	Output Voltage Display on Display

Conclusion:

Through this step-by-step tutorial, we learnt the process of diagnosing and solving a stabiliser rocker switch problem.

Identifying the source of the problem correctly and working efficiently is the main responsibility of a technician. Hopefully, this experience will be helpful to you in any such work in the future.

🟩 Thank you for reading my post and giving your valuable time. Stay well and stay healthy. God bless you. 🟩