Question about ASUS K8V-MX Motherboard

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Smps transistors failed

I used p4 mother board. i have been used mercury smps with 400wolts from 2 years. recently when i swithched on cpu backside power button suddenly there was a flash fire comes and totally smps dead . no beep sounds comes. i removed the power sockets and plugings of smps from motherboard. when i opend smps a fuze was damaged. i replaced the fuze and rearranged a new fuze in smps with the help of electrocian. again i check smps by put power plug with back side of smps. then there was a huge fire crash happend. the electrician told me that the transistors of smps were damaged. why it happend. i used UPS also. i am using same ups to other system and it works fine. but why this system smps was damaged. please tell me. amd also tell me what is cost of the new smps in the market.send yours answers to my email id: shaliguntur@yahoo.com

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Try to chech out the most suspected component such as capacitor, diods transistor and resistors that went bad. Unless U have 2 change the whole SMPS.

Posted on Sep 18, 2012

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It is difficult (or impossible) to tell exactly what caused the transistors to go bad. Sometimes they just fail because they were a little weak, or other parts went bad first and caused the transistors to be damaged. Parts get weaker and values change over time and with use, and failures can happen. The UPS can't stop damage to the power supply if some part inside the supply goes bad, but it is still good to have one. New 450 to 500 watt power supplies can be purchased for $30 to $50 (or more).

Posted on Nov 23, 2008

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