Repairing power supply of MOXA Nport5610

[TomerG]

Hi,
I'm working with this serial to ethernet MOXA.
After power outage, the MOXA couldn't power up again.
There is a separate Power supply circuit inside so I checked the power in (220v) is ok, but there is no power out.
I think maybe the capacitor blown up (two capacitor at the right side)
attached the circuit picture.

Can somone tell where can i get a datasheet for it?
Or does anyone got this problem in the past?

 

[davenn]

Hi
welcome to the forums

the output caps often overheat and fail in these switchmode power supplies
replace both of the ones on the right and chances are it will work

Dave

 

[(*steve*)]

And you can see that one of the filter caps has started to leak.

I would second Dave's opinion

 

[TomerG]

Hi,
Thanks you very much for the quick answer.
I will try to replace them and update.

 

[(*steve*)]

Be sure to choose 105C rated low ESR capacitors. Also choose a reputable brand/supplier.

 

[TomerG]

Hi,
I've replaced both capacitors at the output and the big capacitor at the input, but still there is no output voltage. maybe it's the stabilizer?

Another thing, there are two different lines at the output, and both of them connected to the board, why is that? why the board need two different input with the same voltage?

 

[(*steve*)]

I've replaced both capacitors at the output and the big capacitor at the input, but still there is no output voltage. maybe it's the stabilizer?

Either that or the thronomister*.

Another thing, there are two different lines at the output, and both of them connected to the board, why is that? why the board need two different input with the same voltage?

That will be to supply the required current.

Check that the fuse hasn't blown. If it has, then chances are the chopper transistor has failed.

* A device as nonexistent as "the stabilizer"