crwdns2934241:0crwdne2934241:0 geegor

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Thunderbolt ports (USB-C) no longer working

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I just upgraded the HDD with a 1TB SSD and the RAM to 32GB. Did everything according to the ifixit guide and now the 2 USB-C (TB) ports don’t work. Tried re-installing the OS on the SSD, tried the old HDD still the ports don’t work. Tried to align them more properly like other people say but to no avail. Everything else works just fine. Any suggestions?

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iMac Intel 21.5" Retina 4K Display (2017)

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open