NEWTON POWER NPS-180 Can't Start

[Th3_uN1Qu3]

Re: NEWTON POWER NPS-180 Can't Start

Never seen that one happen. On the other hand i have seen a power supply that kept running just fine while its monitoring circuit was pouring out smoke.

[c_hegge]

Re: NEWTON POWER NPS-180 Can't Start

I meant a faulty protection circuit shutting the PSU down even though there isn't really a problem.

[Th3_uN1Qu3]

Re: NEWTON POWER NPS-180 Can't Start

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

[c_hegge]

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.

[SpyCaps]

Re: NEWTON POWER NPS-180 Can't Start

Can someone help me? T__T

[SpyCaps]

Re: NEWTON POWER NPS-180 Can't Start

I try to check Resistors ans Idodes, no found opened.

If someone have any idea, please tell me.

Thank you all.

[SpyCaps]

Re: NEWTON POWER NPS-180 Can't Start

Check for secondary side shorts, if no shorts, check that the controller is powered on and operating. You will need an oscilloscope or a multimeter with frequency display for this. If the controller is working, most likely primary transistors have failed open.

Thanks Th3_uN1Qu3 but i don't know howto
1.check the shorts
2.i can't find controller datasheet ("2M4 1000DS" label)
3.primary transistors, could you specify for me.



Could you please write in the pictures , i provided?

[Th3_uN1Qu3]

Re: NEWTON POWER NPS-180 Can't Start

Check for secondary side shorts, if no shorts, check that the controller is powered on and operating. You will need an oscilloscope or a multimeter with frequency display for this. If the controller is working, most likely primary transistors have failed open.

[SpyCaps]

Hi all,
I have some problem with my newton's power supply. The purple line have 5 volts but it can't start.
So i decided to replace caps in secondary side but nothing changes.
If anyone can help me please tell me howto fix it.
I attached some pictures of this power supply.
Thanks All.