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Author Topic: power issues again  (Read 1787 times)

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Offline amiga4001Topic starter

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power issues again
« on: October 22, 2005, 09:57:39 AM »
As my A4000 couldn't get it going any more I replaced it with a antec SP-350-Sp so smartpower 350W.

With nothing attached to mobo accept cyberstormppc it boots and the voltage of the +5V rail is about 4.92V.
As soon as I add the mediator it drops to 3.86V and if I place in my kickflash it comes to about 3.80 V.

I made the connection between the antec and the mobo as short as possible and soldered a original A4000 plug directly to the wires of the antec to it.

Needless to say if the voltages reaches 4.80 V it won't boot anymore and if it does there are things missing(keyboard/zorrocards).

What is going on here thought antec where quality psu's?
Payed 62 euro for this psu!
 

Offline amiga4001Topic starter

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Re: power issues again
« Reply #1 on: October 22, 2005, 10:11:01 AM »
Yes that was me but don't believe something is wrong.
Did try another mobo same results and cyberstorm just takes a little bit of drain as the rest of the hardware.
I was thinking that maybe the mediator needed some extra juice as the tower model has an powerplug?
Maybe the traces to the mediator have to much resistance?
I'll try an other mobo with this antec and a 3640 and some zorro card see how that goes for voltage.
 

Offline amiga4001Topic starter

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Re: power issues again
« Reply #2 on: October 22, 2005, 09:54:09 PM »
I can boot her up now with the antec if I do a very fast doubleswitching of the powerswitch.
I removed the pin off the powerconnector and rubbed it clean(little brownish) and made the pin a little wider.
I also soldered a few wires to the zorro connector(+5V and a gnd).
Still there is no more then 4.87V which isn,t enough to keep the delfina going or warpos.

Best would be to solder the wires of an other connector on the underside of the mobo directly?
Could use some thick wires and a few AMP connectors.

Would the mediator be happy with only +5V and a GND or should it also need a 12V line?

Still strange that I have to doublestart to boot(only with the ppc not with "normal" processorcard.

Hoping to find the cure for this!