Can any one tell me what is this part in red circle ??

Its fish tank light transformer

All id does now just blinks light once .

I dissembled it and found this are is quiet burn round this part


Is any one have a clue what is it ?

Thanks

 

Looks like a ferrite bead

 

is there any special settings or i can buy anything?

Or where can i buy one?

 

Can it cause circuit for being non working unstable?

Thanks

 

Looks like some inductor to me, and it is also labeled L104. Which also point to that it is some sort of inductor. Why do you want to replace it?

 

It appears the device has opened up, allowing no current to flow. That very well could make the entire circuit not work.

However, without more knowedge of the full circuit no one can offer a reasonable suggestion to proceed. If the device appears to be a wire within a tube you may be able to replace the wire inside, though I would have to ask what made the wire itself fail.

Just replacing the wire may just make a big spark next time you turn it on.

 

+ on the inductor, you will find it is a piece of copper wire with a ferrite cylindrical bead, it will either measure short circuit or open.
It may be discoloured from the current it carries.
Max.

 

Can it cause circuit for being non working unstable?

Thanks

Its literally a ferrite bead with a wire running through the middle - if it was damaged, it would be fairly obvious.

 

its a thermal fuse. look for ratings on it for degrees. it is designed to open up at a certain temprature.

 

If it is a fuse i would have expected a different notation than L.
Also a thermal fuse should have a rating No. on it.
Max.

 

From it's appearance, I would say a thermal fuse.

Ken

 

Ho do i approach to find correct part for it?

Its measures up as open

Its only one are on entire circuit with burn marks just round this area

Thanks

 

View of the whole board, both top and bottom would help. Any marks you can see on the component?

Ken

 

It looks like some power transistor has been removed from the circuit board. Then a power transistor fails. Components around it may fail. Still assuming it is an inductor. It would not be uncommon that it may have burned out(result open circuit), due to higher current than it is rated for.

 

There no markings on this part

I attached Top/Bottom Pictures

 

its a little hard to see in the picture, if it has a metal shell with a white insulator on one end with the wire coming out, it is a thermal fuse. does the equipment have a nameplate with a temprature rating?

 

I see they have combined the L notation/B notation, in other positions, B is a solid jumper, so logically this would be a solid jumper with a Ferrite sleeve?
The rest of the inductors are labeled L.
Max.

 

That type of Thermal fuse are often colour coded, look thru this link for a match.?

http://www.digikey.com/product-search/en?vendor=317&Keywords=SDJ1&site=us

 

Looks like "the component" is on the opposite side of the PCB from a surface mount power transistor...top edge, to the left of the surface mount bridge rectifier. On the screen print side the PCB is discolored above that transistor. That makes me more inclined to think it's a thermal fuse.

I can't see a solid jumper wire with a ferrite bead likely opening without much more signs of damage.

Ken

 

So do i go for Color Code "Orange" Thermal fuse?