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Old 04-18-2003 | 11:35 PM
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Default Electronics Wiz HELP

I was converting a computer power supply for my 12V source.
and dumbass me... when I tested the PS -on green wire to ground it worked, then I was stupid and put a jumper wire from the green to one of the heat sinks. I found out later that the heat sink live at 120V, I'm guessing that I blew a diode or something of that sort, can someone HELP me,
I just got this power supply, and laid down 80$ on it, I already started hacking wires so I can't return it.
HELP
Old 04-19-2003 | 12:24 AM
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Default Electronics Wiz HELP

If I turn on the power supply the fan will turn on for 1 sec then shut off. maybe there is an alternative to the green power on wire.
Old 04-19-2003 | 02:38 AM
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Default Electronics Wiz HELP

Not good!!! Most computer components run on gray smoke -- if you let the gray smoke out, they quit operating. The "fan bump" you described usually occurs when the PS is cycled on without a load or with a load that is too high for the PS to sustain. Check your load resistor to be sure it is still intact and that nothing has burned thru on the bottom of the PCB. Driving 120 V A/C thru a low voltage solid state switch has probably toasted the PS. Careful examination looking for obvious burned components or an extensive circuit check is probably your only hope -- and not very good without a schematic. I know of no other way to power up a switching mode PS except thru the Power-On cable. Sorry.

Regards,
Andrew
Old 04-19-2003 | 11:03 AM
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Default Or You can do this! ~S~

http://www.nowonsale.com/ppf/itemnam...X/itempage.asp
Old 04-20-2003 | 11:44 PM
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Default Electronics Wiz HELP

OK I ordered a new power supply, no fancy case, I can use the fried power supply case for cosmetics. this time I got a 550W that "they say" puts out 28A off the 12V line, I should not have a problem running 2 Triton chargers off this, Good thing these things are cheap...........
Old 04-20-2003 | 11:50 PM
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Default Electronics Wiz HELP

Oh I looked very closely for hours and didn't find any burn marks, and I don't recall seeing any smoke when it happened. when I turn on the supply I still get the bump. and if I watch the output voltage that bumps also. I tested the resistor that is attached to the green wire, it still holds an ohm value. then it goes into a IC circuit, maybe I should try to replace that chip. some time in the future, I want this nightmare to be over.

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