SLC-Home Repair Club | S23W2 | Tutorial: 12 Volt Mini IPS Repair Output Problem Solution.

How are you all? Hope you are well. Alhamdulillah, I am well too. Welcome to another new repair tutorial in the sixth post of my Home Repair Club. The 23rd season of the Steemit Learning Club has started with new enthusiasm and positive expectations. Each season brings new challenges, but our main goal is to make the learning process easy and fruitful. In today's post, I will show you how to repair a 12 volt mini IPS, which had a problem with the output section.

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A few days ago, a shopkeeper brother gave me a 12 volt mini IPS to repair, which was completely broken. Instead of throwing it away, I decided to bring it home and fix it again. The IPS had two output lines: one for the fan and the other for the light. The fan output line was working, but the light output line was not working. This was due to a problem with the switch. I repaired the switch, and now it is working properly.

So let's start my tutorial post and show you step by step.

Step -01

First, I showed you the front end of my table to fix the mini IPST. I saw that there are two switches, a power switch, and some indicator bulbs. Then I showed you the back section here, where there is a 220 volt AC input voltage line and two DC 12 volt fan and light output lines. Then, since my mini IPST has a problem with the output line, I opened its casing. Then I gave a 220 volt input voltage, and my power section here reached the line, and I gave the switch.

Step -02

Then, to check the output voltage, I took my multimeter and selected the 20-volt range to measure 12 volts. Then you can see that there is a lot of rust on the output voltage jacks here, and I cleaned them first. Then I rubbed the rusty areas of the output jacks with sandpaper. You can see that the white shine is visible. Then, after cleaning the rust of the output voltage jacks, I took the multimeter to check its continuity mode.

Step -03

Then, to check its continuity mode, I selected the multimeter again in continuity mode and checked the wires from one end of the output jacks to the other end. Then I started checking the continuity of the outputs. I checked one side of the negative end and the other side. It is giving me a continuity rating, which means it is fine. And I checked the multimeter from one side of the positive end to the other side, and my meter is giving me a rating, which is fine. Then I have two female jacks here for output voltage. First, I took the line to the multimeter at the end, where I have my fan line. There the output is giving 10.46 volts. But I have another female jack section that is not giving the output properly to the multimeter. There it is giving only 1.50 volts, which is not enough to drive a load. So, we now need to find out where our problem is.

Step -04

Then, I started checking the switching line, and I found the problem inside the switch. Initially, the input voltage was going fine inside the switch from my circuit, but after switching on, the voltage dropped and was not coming to the output of my female jack. So I decided to open it and change it, or if it is good, then repair it. Then I opened the switch with a screwdriver, and here I used some oil to remove the rust, corrosion, and carbon inside the switch. Of course you should use kerosene oil, octane, or diesel—two to three drops here and shake the switch for a long time. After shaking it for a while after adding oil, I checked that my switch is working 100%, and I put it back in the casing.

Step -05

Then, after placing the switch inside the casing, I took the multimeter again and prepared to check the DC output. Then I held the negative probe of the multimeter on the common line of the auto cart circuit of my IPS, which is the negative site, and I held the positive probe of my multimeter on the lower end of the IPS switch. And here, after switching, my multimeter shows 10.92 volts, which proves that my switch is 100% working. Then, at the very end, I checked the negative and positive multimeters on the female jack at the output. There too, I used to get one volt above; now I am getting 10.91 volts here, which is correct for my load. And let me tell you one thing: the battery is showing two volts less because it has been sitting for a long time. When it charges again, it may show 14 to 15 volts here. Then, I will take the male jacks and insert them inside the female jack and check the output voltage.

Step -06

Then, you can see that after inserting the male jack into the female jack, I am getting an output voltage rating of 10.92 volts here through the multimeter, which proves that my output is absolutely correct. Now to check the output with direct voltage and show you, I have taken a small 12 volt LED light here and taken one of my previous connectors to connect it. Then I connected the two wires of my connector to the output jack of the IPS, and I connected the output positive and negative to the plus and minus of the LED. Then you can see that my output voltage is working very nicely.

Step -07

Then, to verify the authenticity of my work, I wrote my club name and my username and took a selfie with me. And a video equivalent to this post is given below. Watching the video will make the work easier.

Product Description

Device	Emergency Light & Fan
Brand	nKc
Model	Automatic Emergency Light & Fan
Voltage	12 Volt DC
Power	Unknown
Problem	Output Line Problem

Problem Description:

• The output line of the light was not working.
• The voltage was dropping due to the switch.

Solution:

1. Switch Repair: The internal rust and carbon of the switch were cleaned and repaired.
2. Output Jack Cleaning: The terminals of the output jack were scrubbed and cleaned to remove rust.
3. Voltage Test: The output voltage was measured using a multimeter.
4. LED Light Test: The output voltage was tested under load using an LED light.

Result:

The device is working properly after the repair.

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