What to do about missing pad on lead?

[Pentium4]

Re: What to do about missing pad on lead?

In-Win have a service and support section if you register may have some info that helps

http://www.in-win.com.tw/US/customer...ce_support.php

"By registering with us, you will be able to download the latest drivers, manuals, test reports, white papers, and more.. It's fast and free"

Cool thanks for the link!

[selldoor]

Re: What to do about missing pad on lead?

In-Win have a service and support section if you register may have some info that helps

http://www.in-win.com.tw/US/customer...ce_support.php

"By registering with us, you will be able to download the latest drivers, manuals, test reports, white papers, and more.. It's fast and free"

[Pentium4]

Re: What to do about missing pad on lead?

Oh yeah you're right, good catch!

[c_hegge]

Re: What to do about missing pad on lead?

Maybe that PSU was simply never intended for that transformer. Looks like that 2nd pin from the right on the bottom row now goes somewhere different

[Pentium4]

Re: What to do about missing pad on lead?

Hmm...transformer "upgrades" are tricky, most of the time you can't swap transformers from one to another unless you carefully check the pinouts of the transformers... where did the new transformer come from? Was it intended for this particular PSU?

They were both PowerMan's In Win built, almost the same internally except for output rectifiers, one of the coils and amount of caps. They were the same topology so I figured it would work

[eccerr0r]

Re: What to do about missing pad on lead?

Hmm...transformer "upgrades" are tricky, most of the time you can't swap transformers from one to another unless you carefully check the pinouts of the transformers... where did the new transformer come from? Was it intended for this particular PSU?

[Pentium4]

Re: What to do about missing pad on lead?

Yeah it was working, and it's getting 5VSB but that's it

[rogfanther]

Re: What to do about missing pad on lead?

maybe the transformer is wired differently ?

[selldoor]

Re: What to do about missing pad on lead?

Was it working before you upgraded the transformer?

[Pentium4]

Re: What to do about missing pad on lead?

Yes, well you will need to tell us what you were doing to it and why.
Bigger pictures of the whole thing not just parts. What was it connected to?

I replaced the 28 size transformer with a 35, and I just did the paperclip trick and plugged in 4 hard drives to give it some load but it wouldn't power on. Hooked it up to a computer and still wouldn't power up

[selldoor]

Re: What to do about missing pad on lead?

Yes, well you will need to tell us what you were doing to it and why.
Bigger pictures of the whole thing not just parts. What was it connected to?

[Pentium4]

Re: What to do about missing pad on lead?

Hmmm, the power supply didn't turn on at all

[Pentium4]

Re: What to do about missing pad on lead?

Awesome....Thanks for the replies I'll test it on Monday!

[tom66]

Re: What to do about missing pad on lead?

More than likely there because the winding core had it already or for ease of alignment during manufacture.

[aqibi2000]

Re: What to do about missing pad on lead?

It's a PowerMan PSU, here are the pics! Yeah it doesn't look like it goes anywhere but I want to make sure!!! Looking at the second picture it is the 3rd pin from the left

Don't worry it's a 'Not connected pad'.

Single layer board, with no trace leading to the pad hence it serves no purpose.

[selldoor]

Re: What to do about missing pad on lead?

How you doing with the 740N

[Pentium4]

Re: What to do about missing pad on lead?

It's a PowerMan PSU, here are the pics! Yeah it doesn't look like it goes anywhere but I want to make sure!!! Looking at the second picture it is the 3rd pin from the left

[eccerr0r]

Re: What to do about missing pad on lead?

I'd be willing to guess that this is OK, and this pin doesn't go anywhere on the other side (if this was a through-plated via hole) ... that is, if this is even more than single sided as most PSUs are 1-layer... Is there a wire connected on the other side of the board on that hole?

You might lose a bit of durability as even if it wasn't connected to anything, it does hold the part on the board... but you probably could have told that the others do much more than enough to make sure the transformer doesn't fall off

[Krankshaft]

Re: What to do about missing pad on lead?

If this is a 2 layer board the trace will be on the other side just solder the component from the top and you'll be fine.

If it's a multilayer board and there is no trace on the top you're out of luck.

[selldoor]

Re: What to do about missing pad on lead?

I cant see a trace from where the pad was - that is why I thought it was just a blank pad - unless there is a trace on the otherside or it is a multilevel board.