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Model Number A1707. Released June 2017, this MacBook Pro features Kaby Lake processors up to the 2.8 GHz quad-core Intel Core i7 processor with Turbo Boost up to 3.8 GHz.

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Fan runs over full speed after battery replacement

Hello. I’ve replaced a battery and now the left fan starts to run at 134%¹ just after turning on mpb. The right fan is starting at very low speed, then it overclocks, so I think it works fine. But there is no any sensible lags on working, cpu temp is fine, only real issue is a fan noise.

I’ve tried to reset SMC and NVRAM by several times, nothing has helped.

¹ By osx-cpu-temp tool:

  • CPU: 50.9°
  • GPU: 51.7°
  • Left fan: 5028 RPM (133%)
  • Right fan: 0 RMP (0%)

While by Macs Fan Control app:

  • Left side (min/current/max): 2160 / 7191 / 5927 on AUTO (custom setting IS NOT CHANGING the speed)
  • Right side (min/current/max): 2000 / 2000 / 5489 on AUTO, custom setting works fine
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Inspect the ribbon cable from the fan unit for damage as well as look at the ribbon cable connector and the matting connector on the logic board for damaged pins. also make sure you inserted the ribbon cable fully.

If you don’t see any damage then you’ll need to replace the fan assembly: MacBook Pro 15" Retina (Late 2016-2019) Left Fan

MacBook Pro 15" Retina (Late 2016-2019) Left Fan Изображение


MacBook Pro 15" Retina (Late 2016-2019) Left Fan


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Anton будет вечно благодарен.
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