Can problem in the mother board damage SMPS?

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I have desktop PC at my home. It is already 9 years old. Till now I have replaced SMPS 4 times. Recently when speaking with the computer repair person, he told me to change the mother board if I have to protect SMPS. As a electronics engineer I could only wonder why would somebody doubt on mother board? Is there a valid reason? Can a faulty mother board really cause trouble to SMPS? Given the fact that SMPS has failed 4 times I thought I should trust him. Please inform me if somebody has similar experience or knowledge on the same. Also what are the other reasons for the SMPS to get damaged?

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Answered By 0 points N/A #194166

Can problem in the mother board damage SMPS?

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In some rare cases faulty mother board will cause damage of SMPS. Try to check the following before changing the mother board. Because of the following reasons SMPS may damage.

1. Check the earth connection of Input Power supply. If proper earth connection is not there SMPS will damage.

2. Check the earth connection of CPU. If proper earth connection is not there SMPS will damage.

3. Check the input voltage. If there is any variation in the input voltage, it will affect the SMPS seriously. And SMPS will damage.

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