The logic board of the iMac (Retina 5K, 27-inch, 2017), model A1419, 2017, 27-inch, Retina 5K. Known faults are being collected.
No guided tree is live for this board yet. The profile, the viewer and manual entry are there on the free plan, and the first sessions on it build the tree.
Checked on 2026-10-29 against 2 sources: corrected. CSV year 2019 changed to 2017. A1419 has no 2019 model: everymac lists A1419 configurations from Late 2012 to Mid-2017 only (the Mid-2017 ones were discontinued 19 March 2019; the 2019 27-inch is A2115). logi.wiki lists 820-01134 as '2017 iMac 27"' (A1419); beetstech lists 820-01134-A with 820-00609-A as printed part numbers of the 'Logic Board w/ CPU - iMac 27" A1419 (Mid 2017)', 'only compatible with the iMac 27" A1419 with Mid 2017 release'; alisaler has 'iMAC a1419 EMC3070 820-01134-A Bios' and EMC 3070 is the Mid-2017 iMac18,3 on everymac. The 2019 in the CSV probably comes from the model's sale until March 2019. Revision A is a placeholder until Studio records the real revisions.
Open the board in NextProbe, answer the symptom questions and follow the lit point. The free plan includes three guided sessions a month. Your own boardview and schematic stay on your machine.