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820-3115-B - Q7030 is burning..

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  • 820-3115-B - Q7030 is burning..

    No light indication on magsafe, no fan spin, measurements getting crazy up and down on all, I replaced the ILS U7000 twice and not much changed, I did noticed that Q7030 gets realy hot and when adding ipa to it i can see that its pulsing, I changed it to with no changes.
    since i cant relay on the measurements I have no clue what causes this issue, but what can make Q7030 heat up so much?

  • #2
    Check for a short on PPBUS first. If that is ok, replace Q7030, Q7035 and the ISL6259.

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    • #3
      Originally posted by dukefawks View Post
      Check for a short on PPBUS first. If that is ok, replace Q7030, Q7035 and the ISL6259.
      ok so i replaced the Q7035 and bingo got green light and fan spinning though the system can't se the battery no orange light and i get error on ASD sensor voltage VPOR or VP0R PBus sensor is reading below the low limit.

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      • #4
        What is your PPBUS voltage 12.3 or 12.56?
        Check around Q5480 and Q5490 for corrosion, they are the voltage sensors.

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