The logic board of the iMac (Retina 4K, 21.5-inch, 2017), model A1418, 2017, 21.5-inch Retina 4K. 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. Variant changed from plain '2017' to 'Retina 4K' (identifier iMac18,2); the CSV gives this board the non-4K label and gives '4K' to 820-00629, which is the wrong way round. Beetstech: PPN 820-00597-06, 820-00597-A, 820-01061-A, 'only compatible with the iMac 21.5" A1418 (Mid 2017) with Retina 4K LCD display assembly', compatible iMac18,2 Retina 4K Mid 2017 MNDY2LL/A (3.0GHz i5), MNE02LL/A (3.4GHz i5), BTO 3.6GHz i7; Greenwave 'Apple iMac 21.5 Retina 4K Mid-2017 i5-7400 3.0GHz Logic Board 820-00597-A'; eBay 'SSD Logic Board 820-00597 Radeon Pro 560 4 GB iMac 21.5" A1418 4K 2017 MNE02LL/A'. Beetstech ties 820-00629 to the standard 1920x1080 2017 iMac18,1. 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.