Hi good afternoon I'm recently trying to fix a pcb circuit for someone but I don't know what transformer and radial inductor is used on this circuit. I'm looking for a replacement or specification for replacement the transformer is from long sail electronic co ltd but went bankrupt the part number is 114858-AA 0223 not sure if there is a part number somewhere online for specification or if there is a way to decode the markings and for the radial inductor I think it has 20 turns with double layers but not sure. I need a part number for specification to replace it if possible thank you.

 

The transformer is probably OK.
I really drought the inductor is bad.

 

I am sure you can do better then "pcb circuit". We are not mindreaders.
We are eager to help with more information.

 

The transformer is probably OK.
I really drought the inductor is bad.

I still need the part number and specification to test these out or what type of smps transformer and inductor is ferrite rod core but not 100 percent sure

 

The inductor: Do you have an inductance meter? Maybe you can pull two that look the same and see if they have the same value. A ohm meter is a good test. The wire is either open or closed. That is probably the only test you need.

You will not get the data sheet in the transformer. Does it look burned? Are there borkern wires. Is the core cracked.

Removing these parts and looking at them, then putting them back may damage good parts. Leave them alone.

 

Your just wasting time and money while your friend waits for his/her device.

 

The transformer got extremely dusty from inside and inductor looks burnt and I need to identify this transformer and inductor ASAP or i will lose my business

 

These SMPS units NEVER use "stock" transformers, you will never find this part- don't bother looking- unless you can salvage from another unit.

98% of the time, the magnetics survive during an SMPS failure.
These parts are made of copper wire and chunks of ferrite, electrically, these are very hard to kill, only a sustained major current flow can melt or destroy them.

It's (1) the semiconductors- almost always- these are the most stressed components, they hold back the dam, so to speak, when they fail, they tend to take some resistors with them.
These resistors are there to fail first, to prevent fires.

 

These SMPS units NEVER use "stock" transformers, you will never find this part- don't bother looking- unless you can salvage from another unit.

98% of the time, the magnetics survive during an SMPS failure.
These parts are made of copper wire and chunks of ferrite, electrically, these are very hard to kill, only a sustained major current flow can melt or destroy them.

It's (1) the semiconductors- almost always- these are the most stressed components, they hold back the dam, so to speak, when they fail, they tend to take some resistors with them.
These resistors are there to fail first, to prevent fires.

Can you tell me what class is this transformer

 

Head start just kidding they don't look hurt from the pictures But better pictures would help like the whole board.

 

If your business is about to fail just buy a new supply dont even waste time on this one. Even if you fix it there is no guarantee it will not fail again soon..

 

The transformer circuit designator is t5001 will it tell me the value of it and I need to know what class is the radial ferrite core inductor it has 20 turns with double layers to replace it because it has burnt sides and the transformer is very dusty from inside as I mentioned earlier

 

you could easily rewire them yourself but the pictures don't show them as bad

 

How do I know which core was used on this transformer to test it out is there a way to decode the markings. I replaced everything except for transformer, inductors and ic chips but it still didn't work. The person needs it tomorrow. It must be because the transformer has too much voltage to dc input but can't tell.