No Wifi Or Bluetooth After Replacing Battery And Speakers Macbook Pro 13 Retina Display Late 2012

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I’m not sure where to begin looking for the problem. Can someone point me in the right direction? I have no Wi-Fi or Bluetooth after replacing the battery and speakers on my MacBook Pro 13 inch retina late 2012 laptop. I followed the tutorial exactly and did not seem to have any problems during the repair.

Either the I/O board cable or the I/O board its self has an issue MacBook Pro 13" Retina (Late 2012-Early 2013) I/O Board Data Cable MacBook Pro 13" Retina (Late 2012-Early 2013) Right I/O Board Here’s the guide MacBook Pro 13" Retina Display Late 2012 I/O Board Replacement