NEWTON POWER NPS-180 Can't Start

[PCBONEZ]

Re: NEWTON POWER NPS-180 Can't Start

Dell Optiplex GX280 Small Desktop has one that fits but it is 210 watts.
[Upgrade]

[PCBONEZ]

Re: NEWTON POWER NPS-180 Can't Start

So it looks like this then?
-
That is a very common Dell part used in.
Dell Optiplex GX60 Small Desktop
Dell Optiplex GX240 Small Desktop
Dell Optiplex GX260 Small Desktop
Dell Optiplex GX270 Small Desktop
And some others.

Should not be hard to find even in THAILAND but search for Dell PSU instead of NPS PSU.
There are maybe 3 Dell PSUs that fit but that are not NPS.

Also now that we know exactly what it is some members may actually have one to look at/check to help answer questions.

.

[Th3_uN1Qu3]

Re: NEWTON POWER NPS-180 Can't Start

It may need a minimum load on 5v for 12v to operate correctly. Connect a spare hard drive to it and see if it goes in spec.

[SpyCaps]

Re: NEWTON POWER NPS-180 Can't Start

HI PCBONEZ,

here is your request.


Yellow should be 12V that u told us.

Why this power is 10V? Where is the problem? I'm so tried for fixing it.

[PCBONEZ]

Re: NEWTON POWER NPS-180 Can't Start

That's not what I was looking for. - It does not help at all.

The PCB number is rarely what the model number is.
That same PCB might get used in 20 different models.
It is the model number on the box that helps to find things.

- I need to see a picture of the sheet metal box that goes into.
- I need to know the model number of the Dell it came in.
.

[SpyCaps]

Re: NEWTON POWER NPS-180 Can't Start

Are you sure you read the label correctly?
I can't find any mention of a NPS-180PB anywhere.
NPS-180BB is a Dell proprietary unit [and very common.]
NPS-200PB seems to be a basic uATX size PSU.
[Although if it was in an old Dell P3 system some had proprietary pin-outs.]
.

[PCBONEZ]

Re: NEWTON POWER NPS-180 Can't Start

Are you sure you read the label correctly?
I can't find any mention of a NPS-180PB anywhere.
NPS-180BB is a Dell proprietary unit [and very common.]
NPS-200PB seems to be a basic uATX size PSU.
[Although if it was in an old Dell P3 system some had proprietary pin-outs.]
.

[PCBONEZ]

Re: NEWTON POWER NPS-180 Can't Start

Finding a schematic is unlikely.
They like to keep their designs secret.

What Dell machine is it in? [What model of Dell?]

Can you post a photo of the whole unit please.
.

[SpyCaps]

Re: NEWTON POWER NPS-180 Can't Start

This is NPS-180EB.
http://www.oemliquidators.com/search...%20-%206500724

- What version/revision do you have?

Hi PCBONEZ,

My version is NPS-180BP. Can i find a schematic of NPS-180?

I want to fix because i like this dell machine and train electronic skill myself.

New supply find difficult in my city. Then i decided to fix it. ^ ^

Please help me to find the bad in this supply. Thanks you all.

[PCBONEZ]

Re: NEWTON POWER NPS-180 Can't Start

This is NPS-180EB.
http://www.oemliquidators.com/search...%20-%206500724

- What version/revision do you have?

[PCBONEZ]

Re: NEWTON POWER NPS-180 Can't Start

Yellow should be 12v.

[PCBONEZ]

Re: NEWTON POWER NPS-180 Can't Start

Major problem that i want to fix this power , because I cannot buy a new one in THAILAND.

Please help me. Thanks all.

This is the most common version of NPS-180 but there are others.

All of these NPS-180 PSUs are interchangeable:

Dell Dimension 4500S
Dell NPS-180AB A
Dell HP-U1806F3
Dell 1N405
Dell NPS-180BB
Dell HP-U180F3
Dell 4E044
Dell Optiplex GX60 Small Desktop
Dell Optiplex GX240 Small Desktop
Dell Optiplex GX260 Small Desktop
Dell NPS-180-AB
Dell NPS-180BB
Dell NPS-180BB A
Dell Dimension 4300S
Dell 01N405
Newton NPS-180AB A
Newton NPS-180BB A
Newton NPS-180-AB

Perhaps if you search for different numbers you can find one in Thailand.

Dell Optiplex GX260 Small Desktop PSU should be easy even there.
.

[SpyCaps]

Re: NEWTON POWER NPS-180 Can't Start

when the two pins are shorted , the power supply work normally, the voltage at each line

red 5V yellow 10V orange 3.3V (I'm not sure why yellow is 10V).

----cracked soldering , scanned not found.
----open resistors , tested all not found.

Do you have a datasheet of this controller?
Do you have a schematic of this power supply?

[Th3_uN1Qu3]

Re: NEWTON POWER NPS-180 Can't Start

No... but i think some of those parts around it did. Does the power supply work normally, with no trouble, with stable voltages, when the two pins are shorted? If so, you could just leave it like that and call it a day. It is probably one of the protections, if the power supply is working normally they do not need to fire.

If you want to fix it, look for cracked soldering and open resistors around it. Check voltages between each pin and ground when they are not shorted together, it'll give us a better chance of understanding what that section does.

[SpyCaps]

Re: NEWTON POWER NPS-180 Can't Start

You haven't told us what controller it is and what pins you shorted.

Do you think this controller has failed?

[Th3_uN1Qu3]

Re: NEWTON POWER NPS-180 Can't Start

You haven't told us what controller it is and what pins you shorted.

[SpyCaps]

Re: NEWTON POWER NPS-180 Can't Start

Major problem that i want to fix this power , because I cannot buy a new one in THAILAND.

Please help me. Thanks all.

[SpyCaps]

Re: NEWTON POWER NPS-180 Can't Start

If the controller were failed the power supply wouldn't start at all.

in picture after i shorted 2 legs of controller, anything work fine.

so can u explain , where is the bad in this case.

I'm very

[SpyCaps]

Re: NEWTON POWER NPS-180 Can't Start

When you try to power the PSU on, does the fan twitch quickly or is it totally dead? If the fan twitches, then the problem is most likely in the secondary somewhere. Either a shorted component or a failed controller/monitoring IC.

fan twitches. I'm sure the problem in secondary. But i don't know where.


shorted component not found , i checked all resistors and diodes and transistors.

i suspec in controller/monitoring IC , can i replace another one instead?

label on front of controller is "2M4 1002DS" < Is it a controller we need?

Thanks

[c_hegge]

Re: NEWTON POWER NPS-180 Can't Start

I know it's not very likely, but I'm sure it's possible.