NEWTON POWER NPS-180BP Can't Start

Hi all,

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





hi UAM,

here is some pics of output voltage on coupler. but i not sure which one you need.

Are these pictures help us.

How u think? someone told me to buy new one but I want to repair it.

Is it hard to repair? Or we must leave it?

Аватар пользователя UAM

I do not understand why voltage on the second photo almost 9 volts? In standby mode, since only 5.

У кошки 4 ноги... Вход, выход, земля и питание.

Hi UAM,
standby mode??
in my testing , i already short green to black line. Is it wrong?

Аватар пользователя UAM

Yes. In standby.
In all modes between 1 and 2 PIN optocoupler MAX. Forward voltage VF IF = 20mA - 1.4 V
For exampe use rom.by/files/SUNNY_ATX-230.zip


IC4 - standby power - In all modes between PIN 1 and 2 - ~ 1.2v .
IC2 - operate power. In standby mode between ground (black wire) and PIN 1 or 2 = 0v
IC3 - ON/OFF operate mode. In standby mode between ground (black wire) and PIN 1 or 2 = 5v

У кошки 4 ноги... Вход, выход, земля и питание.

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