400 watt smps repair

[Gaber Mohamed Boraey]

Hello everyone

I have that power supply

With shorted mosfet, and I decided to install power module because the mosfet not available in local market

There are many universal power module available in market, with different power capacities


200 watt universal power module , which is high power , here is detail about it

https://www.lazada.com.ph/products/4-wires-universal-switching-power-supply-module-5-24v-for-14-65-inch-lcd-led-tv-i338490463.html

Also attached photos

My power supply is 12v, 400 watt

Can I use that universal power module here safely?, will it handle the power supply load?, is there anyway we can know if it’s safe to use or know at loads?

--- Updated Feb 9, 2024 ---

Here is another module for more specifications, they say it’s 300 watt and handle 3 amp load

https://www.amazon.in/ERH-India-Three-wire-Universal-Switching/dp/B098183HY1

 

[Gaber Mohamed Boraey]

it's dedicated for lower power TV LED supplies up to 200W.

The primary cannot be less than the secondary power rating.

You said before three is ratio between the primary and secondary side

 

[Gaber Mohamed Boraey]

Unfortunately the actual load was never mentioned. We only know that the original supply is 400 W rated.

The actual load is 12v led profile different length, up to the power supply load can handle

 

[Gaber Mohamed Boraey]

The primary cannot be less than the secondary power rating.

You right

all calculations are here

https://phys.libretexts.org/Bookshe...d_Electrical_Technologies/23.10:_Transformers