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could you tell us how the PSU goes dead! i mean what exactly leads to the failure of the PSU?
as a start open it and check the Fuse (usually connected facing the fan .. ( the fuse might be blow up due to transient) did you connect it to a resistive load without shunt diodes?! or maybe you connect it to an external load which draws more current that it can supply.
the PSU usually comes with voltage selector you can see it beside the power cable connector. it switches from 120 volt to 220 volt and vise versa. depends on your country electrical ratings. if your psu do not contain this selector so i guess you'll have to change it. (Much Cheaper than hacking it to supply ur desired voltage).
Hope that help. feel free to msg me if you need additional help.
.as i switched my generator supply to the supply provided by the government with the help of change over (selector) the computer restarts and the PSU didn't start up and so did the computer
.It has selector switch
no, no sound, no smell
there ain't any burning signs of any component .......... every component looks fine enough
First i must ask you your experience with electroics.
Have you tested the fuse.If not test it with multimeter.If it is in the socket take it out and if it is soldered to pcb just put one lead of multimeter on one end and the other on opposit end of fuse and read the resistance.There shall be no resistance.
If the fuse tests ok. Then look at the large 20 pin connector of PSU which is for Main board supply.There is a blue wire.Put a jumper wire in the the blue wire and the black wire next to it (creat the short circuit).Now put the psu to power and fan of psu should start to run.
If so then get the multimeter select 50vdc range ant start to test the voltages at the 20-pin connector.
Put the ground lead of multimeter to any of black wires and hold it there during entire test.Put red lead of multimeter to Orange wire of connector and it should read +3.3v
Red wire should read +5V.
Yellow +12v.
Purple +5v.
White -5v.
blue -12v.
gray wire is for power good signal.
If you find all the voltages good, Then you may want to test the supply by putting some load at it.And see if it shuts down or keep running.
If it keeps running them there may be problem with you main board short circuit in any of attached accessories or hardware.Then you must take it to a professional repairman.