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little pink switch?

post #1 of 15
Thread Starter 
Just wondering my friend has an old hp workstation comp. Its got a small little pink switch on it, he couldn't really describe it as he has no clue or idea about these things. I was thinking maybe something to do with a reset or a wattage switch or something? anyway he flicked it. It popped then he could smell it. now it don't work so im gonna have a look this weekend, it don't sound too healthy but it don't hurt to have a look hope might not be lost!
post #2 of 15
Non PFC power supply. That would probably the voltage selector switch, and if it got flipped, the PC is probably toast now.
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post #3 of 15
The voltage switch I bet. He didn't know what it was so he flicked it on?
Ahh!
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Ahh!
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post #4 of 15
Sounds like voltage switch tbh. It seems your friend has let the magic smoke out of the psu
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post #5 of 15
sigh

That's the voltage selector switch, for switching the input between 120VAC (US, Canada, Japan) and 230VAC (Europe, China, South America). Having it set wrong will result in a pop and a dead PSU, and on occasion an explosion.

High quality power supplies usually have active PFC, which eliminates the need for the switch because it automatically regulates input voltage.



So yeah, the PSU is toast. The rest of the system is ok, but you'll need a new PSU.
Edited by Phaedrus2129 - 1/11/11 at 11:38am
post #6 of 15
Looks like it was a voltage switch and he fried the PSU
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post #7 of 15
thats psu is a goner
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Ultra mega
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post #8 of 15
Thread Starter 
Thanks for all the responses, i thought it would be that i expected that it would have broke the psu, but i didn't know whether it would damage any components thankyou for clearing that up with me thanks guys! +Rep
post #9 of 15
Thread Starter 
Quote:
Originally Posted by Phaedrus2129 View Post
sigh

That's the voltage selector switch, for switching the input between 120VAC (US, Canada, Japan) and 230VAC (Europe, China, South America). Having it set wrong will result in a pop and a dead PSU, and on occasion an explosion.

High quality power supplies usually have active PFC, which eliminates the need for the switch because it automatically regulates input voltage.



So yeah, the PSU is toast. The rest of the system is ok, but you'll need a new PSU.
he had no clue, he claimed he was bored so he flicked it over.

Quote:
Originally Posted by maximus20895 View Post
The voltage switch I bet. He didn't know what it was so he flicked it on?
He had no idea! that'll teach him for next time!
post #10 of 15
that surge would have been near instantaneous when that switch is flicked the psu is expecting 120v from the socket,that 240v jolt would fry it like bacon hit by lightning
Ultra mega
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Ultra mega
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