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actually i kinda don't have anyone to talk about this issue so i hope maybe someone on xlt might now something about electronics or maybe could ask someone else. i bought this and when checking the voltages, it would just output +5v but not +12v nor -12v. now there is a function called "remote on" - unscrewing the device i found that one pin of the connector is going to the pcb with a note "ps on". now hoping it would be a matter of bridgeing this to ground i did so and powered it on just to hear a slight sqeak before i could power it off. nothing smelled burned but after i launched it again without the bridge it won't put out any voltage at all anymore :( i triple checked and i have connected the right pin for sure. question is now - with all those safety thingies in this box - how fucked am i? |
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gotta love those lazy links http://www.power-win.com/comm/upfile/p_110930_08791.pdf |
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sorry, i need more physics courses, good luck |
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set the flux capacitor to -3, doc brown's busy makin' coffee |
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no bananas |
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spierdolony zasilacz....krucho a pyta³e¶ na forum elektroda.pl ? szybciej co¶ siê pewnie dowiesz ni¿ tu |
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elektrod± brzydzê siê od lat. ta pierdolona moderacja to jest jaki¶ absurd. ja nawet bojê siê wymy¶liæ nag³ówek czy wybraæ kategoriê bo dostanê od razu milion ostrze¿eñ od tych pata³achów. ja mam takiego elektronicznego majstra to ja to do niego zaniosê. to potrwa ale no s± najwiêksze szanse ¿e co¶ podzia³a. na pewno tyle co siê popyta³em na necie to raczej nie ma mo¿liwo¶ci ¿ebym co¶ ewidentnie zjara³ przy tylu zabezpieczeniach. to mo¿e byæ g³upi bezpiecznik ma³y. |
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PS-ON pin needs to be grounded for it to work. You may have shorted it out to something which wasn't ground, hence the squeak! Sounds like you've probably broken the enable circuit. Not sure why your other rails didn't come on at first. If you didn't have any loads connected it may cause it. You often see this with computer ATX power supplies. If you have some high wattage resistors can connect these between the voltage outputs and ground to act as loads. Use ohms law V=IR to figure out what resistance you want. Chose for a load current between min and max. The resistor power rating is P=(I^2)*R. Too low and it will get very hot! You could always use an old hard disc for the load as this will suck some mA on +5V and +12V. Anyway, back to the enable circuit... You'll have to figure out what this connects to. Active low works by having a resistor from a voltage rail connected to a logic input. You short the logic input to ground, the resistor limits the current and the logic device is triggered. Hopefully the PS-ON is just a transistor that got frazzled. If it's some custom chip then you're in trouble. I'd avoid opening the lid and messing around with power supplies in the future unless you are fully clued up. Switching supplies will use high (lethal) voltages and even the capacitors can store lethal charges for days. I recommend you just buy a PC power supply as it will almost certainly do the job you want and you can test it with a computer first to ensure it's working. |
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oh thanks for the elaborate answer ! yes indeed a few people confirmed that as this ps-on is low active it was supposed to be grounded. i'm still 100 % sure i grounded the right pin but there is a slight chance that i grounded the vsb +5v standby line which was active hence the squeak which was probably some diode on the way. i will leave it today at some local electronics guru and he will take a look. worst case scenario is that the standby line is dead. the other rails didn't come on the same way a atx power supply works - it also doesn't power on before you flick the power switch. this makes a lot of sense for high power supplys. i could use a atx power supply yes or even better, an at one as it has a manual on/off. in fact a lot of people do this for this specific piece i want to power. but i just dislike the fact having a huge and clunky psu with all that cable salad and a fan lying around. in fact i got the psu above for 3 euro and i'd still like to use it very much. it just looks much more proper. of course in case it works. |
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