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  1. #1
    New ROGer Array
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    G751jy - power/charging issues

    I"ve got a G751 that's less than a year and a half old.

    For the past month or so, it has been sporadically losing power during use. This seems particularly true during times of higher GPU usage.

    For a while wiggling the cord would return power. Then it got to the point where power would flicker in and out. Then it wouldn't draw power if a GPU-intensive program was in the foreground.

    It is now at the point where the computer will not draw power at all, save when it is turned off. Meaning that I can use the laptop for only about 90-120 minutes (the life of the battery) before I have to power down and wait for it to recharge again.

    And, sometimes, when I plug in the power at that point, it doesn't even recharge. I have to try several times before it begins to draw power and recharge the battery. Took me a dozen tries the other night.


    I changed brands from Dell to Asus because of Dell's horrible overpriced badly designed power cables/blocks and lousy power jacks. I'm ready to do so again.


    First, though, I'd like to try to fix the G751. So ... two questions:

    (1) Is this problem likely to be on the dc board? ... I've enough tech savvy to put a new one in, but I don't want to do so if that's not likely to be the problem.

    (2) Just how close a match does the chip have to be. I've found a whole lot of dc board chips on ebay and elsewhere for various flavors of the G750-G752 family, but very few to match my exact specs (which is the 60NB06M0-dc1050) ... I've found a dc1020 version ... and I've found a 'G0' version of the -dc1050. Not knowing exactly what all those numbers mean, I don't know how to evaluate when sellers claim it's compatible with a G751jy ... or even how close is close enough.


    thanks!
    LP

  2. #2
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    I have exactly same problem on G751JY ... Did you resovled it?

  3. #3
    Banned Array JustinThyme PC Specs
    JustinThyme PC Specs
    Laptop (Model)G752VY-DH72
    MotherboardRampage VI Extreme
    ProcessorI9 9940X
    Memory (part number)64GB DDR4 8x8 Corsair Dominator Platinum 3800 MHz @ C17
    Graphics Card #1ASUS Strix 2080Ti O11G @ 2.1GHz
    Graphics Card #2ASUS Strix 2080Ti O11G @ 2.1Ghz
    Graphics Card #3ROG Nvlink
    Graphics Card #4Have to feed animals
    Sound CardExternal Audioengine D1 24 bit 192kbps DAC
    MonitorASUS PG348Q @ 100Hz
    Storage #1Intel 905P 480GB U2 flavor
    Storage #2Samsung 850 EVO 1TB X2 in RAID 0, 960 PRO 1TB DIMM.2_1
    CPU CoolerHeatKiller IV PRO and VRM blocks ,Dual D5 PWM serial, 2X 480, 1X 360 RADS
    CasePhanteks Enthoo Elite 8X LL120 PWM, 3X LL140 PWM, 12 SP120 PWM 1x AF140 PWM
    Power SupplyCorsair AX 1500i
    Keyboard ASUS Claymore
    Mouse ASUS Spatha, Logitech MX Master
    Headset Sennheiser HD 700
    Mouse Pad ASUS ROG Sheath
    Headset/Speakers Audioengine A5+ with SVS SB-1000 Sub
    OS Win10 Pro 1809
    Network RouterNetGear NightHawk X10
    Accessory #1 NetGear Prosafe 10GBe Switch
    Accessory #2 Qnap TVS-682 NAS modded with I7 CPU

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    Every G751jy charging issue ive seen ended up being the battery. There is no DC board in these machines. A lithium balancing charger is built into the mother board and the brick just provides DC in.

  4. #4
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    Can that battery be replaced? It started happening all of sudden, after year of using it. Now I am having strange things happen, like I stress test it wih prime and furmark, and on first furmark test it started showing like On Battery, than after sec Plugged and doing that like few times. Like I am unpluggin power. Prime test went without problems. Than I tried RealBench Stress, and as soon it starts it shows same, On Battery / Plugged notes, for a few times. Also after using CPU Burn from Furmark, for more than 5 min, I got several glitches while doing test, machine freeze for a sec .... Not sure what is going on now. CPU Temp goes up to 94degrees, after more than 20 min of stress test.

  5. #5
    ROG Guru: Yellow Belt Array
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    I recently experienced a charging issue on my G751JY notebook where the charge kept dropping off
    & not recharging despite always being plugged in. At first I thought it was a bad battery. Turns out it
    was a problem w/ my USB Razor Death Adder Chroma mouse had bad wiring (my cats chewed on it, lol)
    causing the issue. As soon as I removed the faulty USB mouse the notebook charged back to 100% and
    has been holding btw. 96-100% charge ever since.

  6. #6
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    I think it is hardware issue for me. On load, while rendering with Blender, it is freezing for a few sec, eventually Blender will crash, even temp does not go over 90C ... Best thing is that warranty expired 2.5 months ago .... this is second Asus laptop I purchased, and I paid this one a lot. First one was 3-4x at service due power jack constantly breaking on board. And now this. And 2 days ago I purchased 1080Ti Asus, I hope that one will not behave like these ... but definitely that is last thing I purchased from Asus. Pretty disappointed.

  7. #7
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    Re : G751jy - power/charging issues

    I'am sure you have a broken dc connector on your board due to bad procedure of inserting and removing your ac adapter. Based on my experience, you have to gently insert or remove the ac adapter with rotating movement when you charge or discharge this laptop, not with straight forward-backward movement because that way you could damage or break something inside ac or dc connector, but yeah it seems to be a precaution only, not a fix.

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