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Dell model: NPS-210AB A rev.01 - after overvoltage network ...

zeeuss 8149 7
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  • #1 8977276
    zeeuss
    Level 17  
    Dell model: NPS-210AB A rev.01 - after overvoltage network ...
    The power supply as in the title, and the information from the customer got a surge - two phases at the entrance.

    Blown varistor, fuse endurance, tight two transistors keys in the inverter, blown fused resistors. The disc shows signs of overvoltage and sooty points. So much from the inspection and measurements with an ohmmeter, and the question whether it is worth taking a repair, or maybe it is better to buy a new power supply due to the fact that Dell . I am asking for more experienced advice - because I have not repaired my computer power supplies myself, or maybe someone has a schematic.
    greetings
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  • #2 8977366
    kkknc
    Level 43  
    It's better to buy a second one, but use the search engine about the subject of rolling, and the layout of the pins of non-standard power supplies too.
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  • #3 8977575
    TONI_2003
    Moderator  
    Hello.
    If you have any basics in electronics, I would be tempted to repair this power supply.
    Create documentation in the form of good quality photos, especially the original page and the 20pin output pins on both sides. As it seems to me that this model has normal terminals compatible with the ATX standard.
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  • #4 8982650
    zeeuss
    Level 17  
    Hello.
    More accurate inspection shows that two transistors Q1 and Q2 have been dropped, varistor TH1, Resistors R3 and R4 and resistor R53 on the PCB designated DC-1467 - see pictures.

    I have no scheme, and if someone has one or the like, please post. After that, there are tacks on the DC-1467 PCB and on the metal casing and you can see that there were punctures.

    When it comes to outputting:
    Black - mass, yellow - + 12V, orange - + 3V3, red - + 5V, green - PS_ON, violet - + 5VFP, blue -12V, gray - POK.

    In the plug green is 4 from the right (from below) precedes it: orange, blue, black, green (see photo).

    I for help in repairing - because I can not find such a power supply.
    Dell model: NPS-210AB A rev.01 - after overvoltage network ... Dell model: NPS-210AB A rev.01 - after overvoltage network ... Dell model: NPS-210AB A rev.01 - after overvoltage network ... Dell model: NPS-210AB A rev.01 - after overvoltage network ...
  • #5 8982846
    TONI_2003
    Moderator  
    You know what, but after what you wrote, you do not take it that way, or drop in right ...

    However, the problem is complicated because the power supplies:
    DELL model NPS-100BB A
    DELL model NPS-180BB A
    They have a completely different design, and the mentioned vertical board in the SMD version, and its damage are only readable from the original, and it's rather aPFC on it ...

    There is no scheme for this model, but what are the markings of these integrated circuits on this board and the burned transistors?
    Maybe I can find something similar ...
    PS.
    Only a small consolation that the power supply is normal in addition to its dimensions. :D
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  • #6 8983076
    zeeuss
    Level 17  
    So you can replace it with a power supply from an ATX computer? The point is that I would be tempted to check the motherboard and other computer components because from the customer's description it appears that this overvoltage took a moment-a mistake of electricians.
    After that, the customer is trying to complain about the power plant for the above-mentioned overvoltage.

    Generally, I also think that repairing the power supply especially DELL is not very profitable, but for lack of another ... After trying the disc I will let you know what's next.
    Thanks for the information.
    greetings
    PS.
    The integrated circuits on the board are: L6561 K13351- 8 feet, LM358N, 3L3 1001DL
  • #7 9000125
    Delllow
    Level 15  
    You can easily connect another ATX power supply, in this case Dell used the standard, because it is probably GX270 or GX280?
    Dell uses several models of power supplies depending on the model.

    :arrow: Such a power supply?
    improved TONI_2003.
  • #8 9307295
    zeeuss
    Level 17  
    Replacing the "new" power supply from the used model, the fault has been removed, and the topic is closing ...
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Topic summary

The discussion revolves around the Dell power supply model NPS-210AB A rev.01, which suffered damage due to an overvoltage incident. The user reports a blown varistor, a blown fuse, damaged transistors, and resistors, along with signs of overvoltage on the PCB. Responses suggest that while repairing the power supply is possible, it may not be cost-effective compared to purchasing a new unit. Some participants recommend checking compatibility with standard ATX power supplies, as Dell models often adhere to ATX standards. The user ultimately decided to replace the damaged power supply with a used one, resolving the issue.
Summary generated by the language model.
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