how to check the serviceability of smps

  • Thread starter Thread starter manojbdeo
  • Start date Start date
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manojbdeo

Sir, my pc is not switched on, even the mother board lead don't glow.
so if i trace the problem,
how do i confirm my smps is serviceable or not ?
 
[email protected] said:
Sir, my pc is not switched on, even the mother board LED don't glow.
so if i trace the problem,
how do i confirm my smps is serviceable or not ?
Click to expand...

When the +5V standby voltage isn't present (what the motherboard LED
being dim typically indicates), it's an indication of the power
supply's main fuse being blown. That fuse may be in a socket, but
more typically it's soldered in place. If the replacement fuse also
blows, suspect a blown high voltage diode or transistor.

An old but still useful guide to computer power supply repair:

http://www.soloelectronica.net/fuentes/Power Supply Repair.pdf
 
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