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ianbak
ianbak
Senior Member
Last Activity: Today, 10:33 AM
Joined: 04-14-2023
Location: Hampshire
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  • Looking at the application diagrams for the 9241H, Intersil recommend using an R/C filter on pin 29 (AMON/BMON). So if one of the pads of the missing component is connected to pin 29 and the other to ground, then it would seem very likely that you have knocked off the capacitor that forms part of the R/C filter. I have no idea what value you should replace it with - the only way to find out is to find a circuit diagram or measure another motherboard. That said, if this is the case then the laptop will almost certainly work absolutely fine with the capactor missing!
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  • Dell Latitude 7290 Power Cycling

    Hi,

    I have a Dell Latitude 7290 that power cycles instead of turning on. The circuit board is an LA-F311P

    I have systematically checked pretty much every internal voltage, and they all seem to be present except for CPU Vcc_Core, which doesn't turn on.
    The impedence the Vcc_Core coils is 8.3 Ohms, though, which seems reasonable.
    Vcc_SA does get enabled, and reads 1.05V. This is driven by the same power controller IC as Vcc_Core, so I am assuming that that is good.
    There is no Vcc_GT, but I have read that that can be normal as it only turns on when GPU...
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