One of my friends gave me a working PII system with a couple of scsi drives and it was exceptionally clean on the inside and powered up fine. I noticed however that the power supply Sparkle Power FSP235-60GT had one of the connectors cut and electrical taped. It is narrow gauge wire and looks like it would have had a motherboard fan connector attached. The wires are red black and blue and have some black heat shrink covering them. Is this a motherboard fan speed connector? Can i just solder a fan plug from an old fan on here and have it work properly? This is a minor issue. A more troubling issue is that my Antec power supply tester says that this unit fails and indicates a fault on the -12 volt rail. All the capacitors look good. This power supply tester tests some very dodgy power supplies as good (Deer brand with bulged leaking caps) and it tests this higher quality unit as bad. Does anyone have any ideas?
-
-
Re: Sparkle Power FSP235-60GT
I think some power supplies do not have a -12V rail. Does it list one on the label?
As far as the cut wires, it may have been some proprietary connector for an OEM motherboard, or it may be a fan speed monitor for the power supply. I'd take it apart and see where the wires connect, a lot of the time the connections are labeled on the board. -
Re: Sparkle Power FSP235-60GT
It says -12v 0.8A(Brown)
The wires lead to a smaller circuit board that is not part of the main board. I think I will post some pics.Comment
-
Re: Sparkle Power FSP235-60GT
The first Pic is the cut wires. The second shows the power supply and the smaller circuit board on the right side to which the cut off wires lead. The third is the label.Attached FilesComment
-
-
Re: Sparkle Power FSP235-60GT
My guess would be that the cut off wires are for a variable voltage external fan, the red and black leads being the power leads, and the blue lead being the fan's tachometer signal to be used either for fan speed regulation or to sense a stalled fan. The little PCB is probably the fan regulator.PeteS in CA
Power Supplies should be boring: No loud noises, no bright flashes, and no bad smells.
****************************
To kill personal responsibility, initiative or success, punish it by taxing it. To encourage irresponsibility, improvidence, dependence and failure, reward it by subsidizing it.
****************************Comment
-
Re: Sparkle Power FSP235-60GT
If the wires are conected to the fan controler board atached to the heasink, i would second that.Comment
-
Re: Sparkle Power FSP235-60GT
Any ideas about the -12 v rail. Can I safely use this unit to power a p2 400 mhz with matrox vid card, 2 scsi drives and a cd rom? Is there a capacitor that is associated with the -12 v rail. The caps look to be of good qualitry and in good shape.Comment
-
Re: Sparkle Power FSP235-60GT
iirc those units use a 7912 reg for -12
and are stuffed with fuhjyyu crapcaps.
i do a premptive strike on these before using them.Comment
-
Re: Sparkle Power FSP235-60GT Update
I decided to mess around with this machine a bit more and found that the machine powered up but the power supply fan did not spin. This machine was probably built from parts at my friends dad's IT department and the supply wasn't matched well to the machine. It seems that the power supply fan doesn't spin up because the motherboard doesn't have the right connector on it to give it juice. The motherboard also can't regulate speed on it because its a p2 motherboard and they just didn't do that back then. Is there any way to trick this fan into coming on. I soldered a new connector to the cut wires and connected it to a fan header on the motherboard. It still won't spin up. I think the heat build up may be the cause of the faulty -12 v rail. Any thoughts? I think I might just give this machine a different supply since it seems like a nice old rig. The motherboard is Intel with Nichicon caps and it has a nice adaptec scsi controller and two 4 gig scsi drives. I put a matrox dual vga card into it and I think it will become my ultimate Diablo Warcraft II rig.Comment
-
Re: Sparkle Power FSP235-60GT
Ok, this power supply is weird. I opened it up again and traced the power connector for the psu fan to a molex connector outside the power supply housing. In order for the fan to get power you have to plug the built in pass-through connector into a regular molex connector. This is a strange design, but now it is working.Comment
-
Re: Sparkle Power FSP235-60GT
I have this psu, and your's must have been modified.
My fan is connected within the psu and comes on full speed upon power up.“We the willing, led by the unknowing, are doing the impossible for the ungrateful.
We have done so much, with so little, for so long, we are now qualified to do anything, with nothing.”Comment
-
Re: Sparkle Power FSP235-60GT
You may be right. I think the old fan was removed entirely and a case fan was put in its place. I think they just installed the fan and ran the connector out with the rest of the wires. Thats probably why they also cut the wires for the fan speed. It makes sense now. The fan is a yate loon I think. Those are supposed to be good from what I hear.Comment
Comment