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Hp 15-ch008ca laptop temperature (90d) Error

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    Hp 15-ch008ca laptop temperature (90d) Error

    Dear friends., I am working on this Hp 15-ch008ca (DA0X35MBAF0 Rev: F). It works but after a while it give temperature (90d) Error & shuts down till it cools down again. I added new coolant compound & cleaned the Fan & the heat sink fins, but the error stil persists. The schematics is not available anywhere to trace down thermal Protect circuit. I have uploaded the photos of the motherboard, back & front. If someone can take a look & have an idea where will these components be on the motherboard.
    Attached Files

    #2
    Which SIO is in use here? Since no schematic is available,grab another schematic with same SIO and probe the Fan TACH and similar pins.
    IF the SIO is in BGA form,then its really difficult to proceed.

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      #3
      Originally posted by Echoeye83
      Check that all your big capacitors are not looking like they want to explode sometimes when something overheats it's due to insufficient load or no load whatsoever. Check again. I circled what looks like it's going to explode and the other foam piece make sure it's not causing any load loss. Otherwise you might have to replace those overloading parts. Can't read the exact specs on it. It looks blurred out due to heat.
      Thanks @Echoeye83 for the info. The ones which you have marked (Circled) is not a Caps., I just put a cooling pads on this MUX chip & on the other side there was a transparent sticky sheet. The sticky residue is still on the two caps.

      Comment


        #4
        Originally posted by mcplslg123 View Post
        Which SIO is in use here? Since no schematic is available,grab another schematic with same SIO and probe the Fan TACH and similar pins.
        IF the SIO is in BGA form,then its really difficult to proceed.
        mcplslg123 SIO used is IT8987vg ... All BGA. It is very hard to find out which pin controls the fans. Is there any similar Model/schematics to the motherboard I have???

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