How to modify double Optocoupler SMPS of LCD/LED TV

Hi, guys today in this post I will guide you on how you can repair and modify double Optocoupler SMPS of LCD/LED TV.

This is my personal experience which I am going to share with you to repair damage to double Optoculper SMPS of LCD/LED TV

In the below picture you will see a picture, where I mark the double optocoupler SMPS circuit. If you have the same type of power supply, follow the below instruction to fix the double SMPS power supply.

How to modify double Optocoupler SMPS of LCD/LED TV

Modify double Optocoupler SMPS of LCD/LED TV

  • First, remove switching MOSFET and PWM IC from the circuit.
  • After that find that the optocoupler which optocoupler 4no pin has a connection with the 2no pin of PWM IC.
  • After finding that the optocoupler installs 5LO380R STR to modify the double optocoupler SMPS. Below this block, I have attached the circuit diagram of How to install 5LO380 STR. After installing the 5LO380R STR you will be able to modify double Optoculper SMPS very easily.

I personally use this method to repair the double optocoupler power supply of LCD/LED TV. And this is a very effective technique to fix a power supply that has a double optocoupler. Below, I have attached a practical video on modifying the double optocoupler of the power supply. Just watch that video to better understand how to modify the power supply.

Connection of Optocoupler 4no Pin and PWM IC 2no pin

Connection of Optocoupler 4no Pin and PWM IC 2no pin

Circuit Diagram of 5LO380R with Double Optocoupler SMPS

Circuit Diagram of 5LO380R with Double Optocoupler SMPS

Watch video of modify double Optocoupler SMPS of LCD/LED TV

FAQ How to modify double Optocoupler SMPS of LCD/LED TV

Universal power module circuit diagram

universal smps module circuit diagram

In this post, you will get a circuit diagram that we use as a Universal power module circuit diagram. Using this diagram you can repair and fix any kind of SMPS power supply.

Switching power supply failure modes

if you get Switching power supply failure, just read this post damm sure you will be able to repair your Switching power supply failure at your home.

Universal power supply module for led tv

5LO380R is one type of Universal power supply module for led tv. you have to connect all three components by yourself to install them in the SMPS. In this post, I have explained everything about how you can repair and modify any kind of SMPS of LCD/LED tv.

Read our other LCD LED TV repairing Technique

About Dipankar Das

I am a Professional Electronics Technician, Blogger, Youtuber, Social Media Influencer, and founder of Dip ELectyronics LAB. I have profession on ELectronics, PCB Designing, Project Making, Gadgets Repairing and 3D Printing. Keep visiting to get important information.

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