need help!!!!

[dr3amer]

need help on transformer!!!!

Anyone can help me by identified what is the transformer?
Thanks alot!!!!

 

[Nigel Goodwin]

Looks like a custom SMPS transformer - you would need to source a replacement from the manufacturer of the board, who presumably has it specially made.

 

[dr3amer]

zzzzz..... the board i'm showing is a power board and i suspect it's the transformer break down since i tested the IC and it's still in good condition.

following is the photo of the full board. Any clue of what is damage at the board?

 

[3v0]

Wnen you start a new thread please use a title that has more meaning.

 

[dr3amer]

Wnen you start a new thread please use a title that has more meaning.

ok. By the ways, you might need to check your error. Thanks.

 

[Nigel Goodwin]

zzzzz..... the board i'm showing is a power board and i suspect it's the transformer break down since i tested the IC and it's still in good condition.

following is the photo of the full board. Any clue of what is damage at the board?

Could be anything, it's EXTREMELY unlikely that it's the transformer, they are very reliable.

Most common problems are high-ESR electrolytics, O/C high vlaue resistors, and duff semiconductors.

 

[3v0]

ok. By the ways, you might need to check your error. Thanks.

I said please. Why the attitude ?

 

[indulis]

How did you determine the PWM was working?

 

[dr3amer]

oh well... i measure the output pin of the IC and it show some output. but after the transformer, nothing come out. it just end there.

 

[ronsimpson]

What is the part number on IC1?
Check the 3 output diodes.

 

[dr3amer]

the part number is the same with the board name. which is thx203h. checked output after the transformer. nothing come out.

 

[Mr RB]

R1 is probably open circuit or gone high-resistance. I doubt the electro caps have gone bad.

Many of these PSUs need a load connected before they start up...