Delta Electronics: DPS-410DB A issues
Greetings everyone.
I have a DPS-410DB A power supply from Delta Electronics wich i am trying to fix and then use it on my PC. A google search told me that it is ATX form factor, so it should be compatible with my motherboard ( Gigabyte H81M-S, Socket 1150 ), i like the supply for a number of reasons, so i have started working on it. I have performed a search on google and here before i decided to start this topic.
The fixing part should not be a problem, i am waiting for some parts to arrive ( the main supply's mosfets especially ), what i did found puzzling are 2 things:
1.-The main supply seamed to stay turned on regardless of the Ps-On command. As you may know the unit uses the DNA1002D chip for supervising, i could not find it's datasheet but i did find this:
http://s6.postimg.org/5frka9tup/Delt...onnections.png
My unit was missing the 1k resistor from +5Vsb to Ps-On wire tap, it looked like it has been ignored from the factory, because the board contained all the neccesary traces for it, but the component was missing... It could be possible that before i got the unit someone actually removed that component so cleanly that it looked like it has never been place there in the first place, or the motherboard that it has been used on, gave the Ps-Off signal to the supply, i have no other explanation for it because without that component the main converter cannot turn off... I replaced that missing resistor with a 1k2 one and the Ps-On command seams to work ok now... It's the red arrow pointed one from the photo below:
https://s6.postimg.org/dmjk1ujxc/013.jpg
Why would that be missing?
2.- The other thing that confuses me is that the supply seams to generate the PG signall from the +3,3V main rail, rather than from the +5V one, that is a first for me even though i have fixed many ATX psu's, and that's why i came here with this topic ( i hope it is on the right section ), i know that this signall is sometimes less than 5V exactly but isn't 3,3V too low for ATX motherboards?
I performed a google search before coming here, but i've failed in finding enough information, so i am asking for your help, as i sayd for now i am waiting for some components to fix the main converter, thus i cannot test it yet on my PC, but even when i fix it, should i even try to test it? Would that 3,3V PG signal be enough for the motherboard to know the supply works well?
Any imput would be greatly appreciated.
Respectfully, Marian.
I have a DPS-410DB A power supply from Delta Electronics wich i am trying to fix and then use it on my PC. A google search told me that it is ATX form factor, so it should be compatible with my motherboard ( Gigabyte H81M-S, Socket 1150 ), i like the supply for a number of reasons, so i have started working on it. I have performed a search on google and here before i decided to start this topic.
The fixing part should not be a problem, i am waiting for some parts to arrive ( the main supply's mosfets especially ), what i did found puzzling are 2 things:
1.-The main supply seamed to stay turned on regardless of the Ps-On command. As you may know the unit uses the DNA1002D chip for supervising, i could not find it's datasheet but i did find this:
http://s6.postimg.org/5frka9tup/Delt...onnections.png
My unit was missing the 1k resistor from +5Vsb to Ps-On wire tap, it looked like it has been ignored from the factory, because the board contained all the neccesary traces for it, but the component was missing... It could be possible that before i got the unit someone actually removed that component so cleanly that it looked like it has never been place there in the first place, or the motherboard that it has been used on, gave the Ps-Off signal to the supply, i have no other explanation for it because without that component the main converter cannot turn off... I replaced that missing resistor with a 1k2 one and the Ps-On command seams to work ok now... It's the red arrow pointed one from the photo below:
https://s6.postimg.org/dmjk1ujxc/013.jpg
Why would that be missing?
2.- The other thing that confuses me is that the supply seams to generate the PG signall from the +3,3V main rail, rather than from the +5V one, that is a first for me even though i have fixed many ATX psu's, and that's why i came here with this topic ( i hope it is on the right section ), i know that this signall is sometimes less than 5V exactly but isn't 3,3V too low for ATX motherboards?
I performed a google search before coming here, but i've failed in finding enough information, so i am asking for your help, as i sayd for now i am waiting for some components to fix the main converter, thus i cannot test it yet on my PC, but even when i fix it, should i even try to test it? Would that 3,3V PG signal be enough for the motherboard to know the supply works well?
Any imput would be greatly appreciated.
Respectfully, Marian.
. Delta Electronics make really nice power supplies, so at least you know you can trust this PSU to power your computer reliably and not blow up like the no-name cheap-o stuff.
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