CHECKING POWER SUPPLY

 I THINK THAT YOU ALL KNOW THAT THERE IS A POWER SUPPLY IN YOUR COMPUTER. THE POWER SUPPLY IS CALLED AS SMPS IN COMPUTERS. THE FULL NAME OF SMPS SWITCH MODE POWER SUPPLY.

NOW ONE DAY WE ARE ON LEAVE AND WANTED TO START YOUR COMPUTER, BUT IT COULD NOT BE STARTED. IN GENERAL ONE POWER LIGHT GLOWS IN FRONT WHEN YOU START THE COMPUTER. TODAY  THERE IS NO POWER LIGHT. IN THIS CASE THERE CAN BE TWO THINGS.
1. THE POWER CABLE OF THE COMPUTER IS BAD.
2. THE SMPS IS BAD.

Computer After opening the cover

HERE THE TOPIC IS HOW CAN YOU CHECK YOUR SMPS TO BE SURE THAT THE POWER SUPPLY/SMPS IS GONE OR NOT.  AT FIRST PURCHASE A NEW POWER CABLE FROM YOUR LOCAL ELECTRICAL SHOP. THEN OPEN THE COMPUTER COVER WITH A SCREW DRIVER. DON'T WORRY THERE IS NO QUESTION OF ELECTRICAL SHOCK.

A LARGE AND A SMALL CONNECTOR

NOW OPEN THE POWER SUPPLY ATTACHED TO PC MOTHER BOARD. A 24 PIN (SOMETIMES IT MAY BE OF 20 PIN ALSO) CONNECTOR AND ONE 4 PIN CONNECTOR IS ATTACHED WITH MOTHER BOARD COMING FROM THE SMPS. YOU WILL GET A LOCK IN BOTH THE CONNECTORS. PUSH THE LOCK FIRMLY AND THEN PULL THE CONNECTOR CAREFULLY.


NOW BOTH THE POWER SUPPLY CONNECTOR IS OPEN. CHOOSE THE BIG CONNECTOR (20 PIN OR 24 PIN CONNECTOR) AND FIND OUT THE GREEN CABLE. AFTER GETTING THE GREEN CABLE. PUT THE SMPS POWER CABLE IN THE BACK OF THE PC. AND ALSO 3 PIN PLUG INTO THE HOME AC SUPPLY OR PLUG POINT.

SHORT GREEN AND BLACK CABLE

NOW SHORT THE GREEN CABLE WITH THE ADJACENT BLACK CABLE.  IF THE FAN IS RUNNING, YOU CAN BE 99% SURE THAT THE POWER SUPPLY IS OK. DO THIS CHECKING CHANGING A POWER SUPPLY , TO BE SURE YOURSELF.


TECHNICALLY YOU ARE SHORTING A GROUND (BLACK) WITH 3.3 VOLT(GREEN). THE START BUTTON AT THE FRONT OF THE PC CABINET DO ALMOST THE SAME THING.

I HAVE GIVEN SEVERAL PICTURES TO MAKE YOU UNDERSTAND THAT WHAT YOU HAVE TO DO.

SHORT GREEN AND BLACK CABLE

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