Switched Mode Power Supply
The disadvantages of LPS, such as lower efficiency, the need for large value of capacitors to reduce ripples and heavy and costly transformers, etc., are overcome by implementing Switched Mode Power Supplies.
The working of SMPS is understood by knowing that the transistor used in LPS is used to control the voltage drop while the transistor in SMPS is used as a controlled switch.
SMPS ( Switched Mode Power Supply ), the power supplier to Motherboard and all other components, is the main part of a CPU. How do you know when your computer stops working suddenly and whether it is a complaint of SMPS or not?
It is straightforward to check the SMPS problem. You can check with a piece of power code ( wire) or with a multimeter. Use whichever is available to you following two steps.
Unplug SMPS or PSU. Disconnect all PSU leads to motherboard and drives. Leave at least one fan directly connected to a 4-pin Molex connector of PSU.
On the 20 or 20+4 pin main ATX power connector, short the pin with GREEN wire (PS-ON) to any adjacent pin with BLACK wire. This process makes the power supply turn ON once plugged into the AC main.
Plug the power supply into the AC main. PSU fan and connected fan should rotate. You can now test with a multimeter. Here are the voltages:
YELLOW wire= +12VDC
RED wire= +5VDC
ORANGE= +3.3VDC
Voltage readings must be within +/-5% of the above values.
2)Stage 1 – Unplug Power Connections.
The initial step is to turn off all the force associated with the PC and ensure your PC is wound down totally.
Stage 2 – Open Computer Case.
Open your PC case by eliminating some of the screws at the left half of the PC case. You'll have to eliminate just one side of the case:
Stage 3 – Unplug PSU Connection.
Turn off all the association from the PSU (SMPS) to all inner equipment gadgets. The greater part of associations contains cut connections, so ensure you lose the clasp before eliminating any association.
Ensure your SMPS/PSU isn't associated with a single thing from inside:
Name, all things considered, to eliminate:-
24 Pin ATX From Motherboard.
4 Pin ATX Form Processor.
SATA Power Connector From Hard Disk Or DVD-R/W.
4-6 Pin Power Connector From Graphic Card (If Attached).
Stage 4–Make A Shorting Wire.
After the SMPS association was eliminated, make a "U" state of metal wire, or utilize a paper cut by twisting it to a "U" shape, which will assist us with shorting our PSU to test its working or not.
Stage 5 – Test The SMPS.
First, track down the 20 or 24 pin ATX connector from your SMPS (clearly the greater one), and after that, find the green and dark wire association. You don't get befuddled because there is just one green wire accessible in that entire attachment.
After discovering the association, join the force rope to the SMPS and supplement the metal wire into the green and dark wire connector and short the circuit and that will permit us to test our SMPS/PSU is working or not.
If the SMPS fan runs impeccably with no slacks and stoppage, that means your SMPS is turned out great. On the off chance that your fan doesn't move or possibly move for simply a sec and afterward stops, that means you have a defective SMPS close by, and you'll require a substitution.
You must be logged in to post a comment.