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SMPS Not switching on

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Troubleshooting to SMPS is a tricky one. BTW, what is the brand name to your TV? What is the SMPS configuration? Transistor based or IC based?

Posted on Nov 26, 2013

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Posted on Jan 02, 2017

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How the SMPS is working in telecom? What are the functions of SMPS? How it is Converting AC to DC? What are the parts are there inside the SMPS and their function?


smps involves ac to dc and dc-dc switching at high frequency because the type of a transformer in smps is a high frequency transformer and a current gain due to the ferrite application.to do a dc to dc switching you need a mosfet,smps ic e.g uc3845,dc capacitor and some passive components.

Aug 31, 2014 | Eaton Powerware® 9120 UPS System

1 Answer

Ive had this bluray player for 2 years and it was working fine, then one day i tried to turn it on and nothing happened. i checked if the fuse was blown but i appears to be fine. so there is no power...


hi,
there is possibility of two complaints.
1, The SMPS power supply fault
2. the mother board fault.
if the SMPS is faulty the you can rectify the problem. If it is with the mother board the you have to contact the manufacturer .
First of all you have to check the SMPS ( switch mode power supply). you have to check the voltages at it secondary stage. 5v, 12v, etc
switched-mode power supply (switching-mode power supply, SMPS, or simply switcher) is an electronic power supply that incorporates a switching regulator in order to be highly efficient in the conversion of electrical power. Like other types of power supplies, an SMPS transfers power from a source like the electrical power grid to a load (e.g., a personal computer) while converting voltage and current characteristics. An SMPS is usually employed to efficiently provide a regulated output voltage, typically at a level different from the input voltage
for checkin the SMPS voltaes you need a multimeter. And check the voltages at it secondary stage
Added the inside view of BD 1600
ajin_g_45.gif

if there is no outputs from the smps then you have to replace the SMPS drive STR ic near the big capacitor. Also ty to replace the OPTO coupler ic. y have to check the all resistors near the ic.

Remember one important thing that the capacitor can hold charge for some time even if you disconnect the power. so after removing the power. remove the SMPS very carefully. discharged the capacitor using a bulb.
i have also added a video for SMPS working for you reference will hep you for repairing your one

ok

Apr 07, 2011 | Samsung BD-P1600 Blu-ray Disc Player

1 Answer

The power switch is not turning the computer on.


switch problem / motherboard problem / smps
1 change power switch
2 check smps
3 mother board supper io check
1
remove power switch and short two lege

Feb 08, 2011 | Acer Aspire AX1800U9002 (PTSBW02001) PC...

1 Answer

Seams like fan not working


if the fan is not working first you have to test the smps remove the smps connector from the motherboard and short the green and black pin it he smps fan is working then the smps is fine coneect the smps connector to the motherbord and switch on the computer still not working then remove the four pin connector from the smps and restart your computer if irts working the problem is in your motherboar

Dec 30, 2010 | Dell (6F858) Cooling Fan

1 Answer

P4B-M standby LED lighted and CPU fan jerked a little and stopped when power is plugged into the power supply unit. The motherboard does not seem to power up/ CPU fan remain still even the power switch on...


This is an issue with the power supply (SMPS) in your computer... Replace the SMPS will fix the issue...
It is not adviced to service the SMPS, because servicing the SMPS will not give proper power supply to the board, which may result in damage of Motherboard...

Dec 15, 2010 | ASUS P4B-M (P4BM1400WOLTINY) Motherboard

2 Answers

CPU does not turn on..everything is plugged in..power cord is plugged into a working socket. what are my options?


its 2 cable that need to be plugged in from the power suppley, the wide cable and a 4 stick cable. both to the mother board. also you need to connect the fan cable to the mother board. how do you know that the processor doesent start ?

Oct 26, 2009 | Computers & Internet

1 Answer

Pc not switching on even after changing smps. even fan not switching on in smps


Dear,
You can test you smps simply by shorting any of the back wire and green wire. this will switch on your smps withour connecting with mother board. IF it the fan rotate, SMPS is ok.
If you need more trouble shooting on SMPS you have to measure the volate on each wire after powering on.
More info http://www.smpspowersupply.com/connectors-pinouts.html

Oct 13, 2009 | E-Machines 230W Micro ATX Power Supply,...

1 Answer

Mercury smps not switching on in the cup often fuse opened


pls don't use mercury smps!!!!!! me and my frns faced problems due to the smps..... that ******* smps damaged my harddisk twice....... pls change the smps...... buy cooler master or corsair..... a bit expensive but good performance and long lasting ones.........

Dec 21, 2008 | Mercury P4VM800M7 Motherboard

1 Answer

Not switching on


wrong or bad cpu

Aug 30, 2008 | Computers & Internet

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