Apple TDK PSU

[Chevy2]

I accidentally fried the inductor on an Apple LC PSU. Can anyone help me locate a replacement? The only part number visible to me is 290A P15.

Thanks!

[goontron]

Re: Apple TDK PSU

thats not the only thing fried! when that goes, something is very wrong!

[japlytic]

Re: Apple TDK PSU

The fried component in the picture is a common mode choke for EMI filtering - they should not be all that hard to get in the right size, but current capacity needs to be considered.

[Chevy2]

Re: Apple TDK PSU

thats not the only thing fried! when that goes, something is very wrong!

Didn't mention it was plugged in when I tested and it shifted and 110 touched it. The value and a suitable replacement is what I'm having a hard time with.

[goontron]

Re: Apple TDK PSU

ok, what are the dimensions of the choke? and lead spacing? also, what's the incoming line amps (or watts?) written on the PSU?

[stj]

Re: Apple TDK PSU

you could pretend it's a no-name pc supply and replace it with a pair of jump-wires.

[Chevy2]

Re: Apple TDK PSU

ok, what are the dimensions of the choke? and lead spacing? also, what's the incoming line amps (or watts?) written on the PSU?

The lead spacing is Half inch by 7/16, with the choke not much larger. I've attached a picture of the outside label.

Thanks!

[goontron]

Re: Apple TDK PSU

this one look about right? http://www.digikey.com/product-detai...0-5-ND/1994023
if not, can i get actual package size for the choke?

[addytzu123]

Re: Apple TDK PSU

Looking at the picture, there is also a component that might be a varistor, wich is split in half (or so it looks).

[Chevy2]

Re: Apple TDK PSU

Looking at the picture, there is also a component that might be a varistor, wich is split in half (or so it looks).

Adding a picture to double check..everything appears ok to me.

[Chevy2]

Re: Apple TDK PSU

this one look about right? http://www.digikey.com/product-detai...0-5-ND/1994023
if not, can i get actual package size for the choke?

It looks exactly like it, but how do I know which mH and amperage to get?
Its approx. 20mm long x 21mm height x 16mm width
Lead spacing is 13mm x 10mm

[addytzu123]

Re: Apple TDK PSU

I pointed the suspect component below. Could you check if it's a crack or just paint line..

[stj]

Re: Apple TDK PSU

looks like a crack.

[Chevy2]

Re: Apple TDK PSU

I pointed the suspect component below. Could you check if it's a crack or just paint line..

I think it was just a molding line. I looked again and it looks ok. Any guess on at the mH that I should replace this with?

[kaboom]

Re: Apple TDK PSU

For testing only:

Jump the choke out and make sure the supply still comes up.

[Chevy2]

Re: Apple TDK PSU

For testing only:

Jump the choke out and make sure the supply still comes up.

Computer booted just fine with it jumpered.

[Chevy2]

Re: Apple TDK PSU

this one look about right? http://www.digikey.com/product-detai...0-5-ND/1994023
if not, can i get actual package size for the choke?

Are you saying that this is a safe replacement and the one to get? Want to be sure before ordering.

[berniedd]

Re: Apple TDK PSU

Have you considered just rewinding it?

[Chevy2]

Re: Apple TDK PSU

Have you considered just rewinding it?

Have never done that before. I'm assuming I'd just be better off picking up a new one.

[Chevy2]

Re: Apple TDK PSU

Is it safe to just leave the jumper wires in place and seal it up? Seems to work just fine.