Is PSU Still Good after Shorting the FDD Lead?

ParatoOptimal

Golden Member
Jan 27, 2004
1,094
2
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I "apparently" slipped the power cord to my floppy over the wrong pins.
The lead has red, black, black, yellow wires.
The red wire melted down to the wire and smoked-up something fierce.
I hit the PS switch and installed a different PSU and FDD.

My question is, "Is this PSU still Useable?"
There is some unburned Red wire that I could splice new wire to.
I could snip off that lead to the FDD and just tape it off to use the remaining power connectors.

It's a 450W I got from Directron.
I forget the make.
It got rave reveiws for very cheap money in AT's Hot Deal forum.

Thanks
 

Fullmetal Chocobo

Moderator<br>Distributed Computing
Moderator
May 13, 2003
13,704
7
81
You should have activated the short protection on the PSU. If it is a good PSU, then it will be fine. Fire the thing up and see. I've done the same thing (of sorts--shorted +12V to ground when modding power cables), and it was fine.
 

ParatoOptimal

Golden Member
Jan 27, 2004
1,094
2
81
It's a
Super Flower TTGI
Two-Ball Bearing Fan
Fan-Speed Adjustable
(Auto/Silence/Turbo)
450W
SF-450TS

I know there is still insulation at one end of the wire.
I'm not sure about the other end.
Could I just nip it off and replace it?
Perhaps I could take it to an electrician's shop.
 

JustAnAverageGuy

Diamond Member
Aug 1, 2003
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0
76
I've also put the floppy power cable on backwards. Even with a cheap PSU, the worst I've ever done is fried the floppy drive. Still use the PSU to this day though.
 

Zepper

Elite Member
May 1, 2001
18,998
0
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The floppy drive might not have been damaged as apparently you had connected the red wire (+5V) directly to ground (current didn't have pass thru the FD to get there) - maybe you melted the pwr connector on the FD, but that wouldn't necessarily keep it from working. I'm surprised the overcurrent protection of the PSU didn't trip (that alone would cause me to consider getting a PSU with a better rep for quality than TTGI), but PSUs these days have so many Amps available it might not have appeared as a short to the PSU... I doubt the PSU was harmed at all.

I've had melted drive and mobo wires before from contact resistance with no lingering negative effects at all. I just clean up and tighten the contacts, replace the melted sections of wire and fire it back up.

.bh.
 

Zepper

Elite Member
May 1, 2001
18,998
0
0
Well the 5V and/or ground contacts in the FD connector might have carbonized a bit from the high current, but yes if you can clean the contacts in the FD connector shell (they are easy to get out). Sure, why not. I'd rather replace the piece of wire that was melted, but insulating it some other way would do as well.

.bh.