Microtek Inverter Repairing Full Guide in Hindi | Inverter Repairing Course

Summary

The video explains the process of repairing a Microtek inverter model e1100, which was previously examined by another technician but brought back for further repair. The main issue identified is the damage to three MOSFETs and a TVR component. The technician demonstrates how to test and replace these damaged components using personal tips, like checking continuity with a multimeter and using specific tools for efficient repair. Additionally, the video highlights the importance of having the right components for successful repairs and directs viewers to a website offering affordable spare parts. The inverter is successfully repaired by the end of the video.

Takeaways

• 🔧 The inverter being repaired is a Microtek model E1100, which had already been taken to another technician without success.
• 🛠️ The inverter had physical damage, with three visibly damaged MOSFETs that needed replacement.
• 🔍 The repair process began with checking and replacing the physically damaged components, as internal damage is harder to detect.
• 📏 A continuity test was performed using a multimeter, revealing three shorted MOSFETs that needed to be replaced.
• 💡 Along with the MOSFETs, the TVR (transient voltage suppressor) and some resistors were also found to be damaged and required replacement.
• 🛡️ The repair included the use of a 7545 number MOSFET, which is a high wattage component, and 100k ohm resistors to replace the burnt ones.
• 🧰 Special techniques were employed to remove the damaged components, such as soldering, desoldering, and using a suction tool (desoldering pump).
• 🔩 After replacing the components, heat sink compound was applied for proper cooling, and screws were tightened before final soldering.
• 💻 The technician emphasizes the difficulty of sourcing small electronic components and highlights their online store where these parts are available.
• 🔋 After repairs, the inverter was successfully tested with a small battery, confirming that the problem was resolved, although a low battery indicator was shown due to the test battery size.

Q & A

What is the model number of the Microtek inverter mentioned in the script?

The model number of the Microtek inverter is E1100.

What is the first step the technician takes when repairing the inverter?

The first step the technician takes is to understand what the problem is inside the inverter.

What does the term 'Physical Damage' refer to in the context of the inverter?

In the context of the inverter, 'Physical Damage' refers to visibly damaged components that are easily identifiable and need to be replaced.

What is the importance of checking for physical damage before looking for internal damage?

Checking for physical damage is important because it is easier to identify and replace damaged components. Internal damage or short circuits are harder to find without addressing the physical damage first.

What is the term used for the TVS diode that is visible in the script?

The term used for the TVS diode visible in the script is 'TVS Diode', which is also referred to as a 'protection diode'.

Why is it crucial to replace a faulty IC in the inverter?

It is crucial to replace a faulty IC in the inverter because the IC contains the programmed information necessary for the inverter's operation. Without it, the inverter cannot function properly.

What is the 'secret tip' the technician mentions about repairing inverters?

The 'secret tip' mentioned by the technician is about how to program a new IC if the old one is damaged, which will be explained in another video.

What is the significance of the number 7545 found on the MOSFET?

The number 7545 refers to the model number of the MOSFET that is used in the inverter. It is a high wattage MOSFET and is available in the market.

What is the purpose of the heat sink compound applied to the inverter?

The heat sink compound is applied to help dissipate heat more effectively from the components, ensuring they do not overheat and function properly.

What is the role of the螺丝 (screws) in securing the MOSFET in place?

The screws are used to secure the MOSFET in place after it has been soldered, ensuring a stable connection and preventing it from coming loose during operation.

How does the technician ensure that the inverter is fully functional after repair?

The technician ensures the inverter is fully functional after repair by testing it with a battery connection and checking for any short circuits using a multimeter.