Apple · laptop motherboard

Apple iMac A1419 820-4652

SchematicBoardviewBIOS
Board code
820-4652
Revisions
Rev A
Files
5
Updated

Apple iMac A1419 820-4652 is a laptop motherboard used in the Apple iMac A1419.

The catalog has 2 schematics, 1 boardview file and 2 BIOS files for it, posted in 2021 across 3 Telegram channels. Each download button opens the original Telegram post.

The files are marked Rev A; other revisions of the same board can differ in parts and layout.

The boardview is packed in an archive and the file name does not say which format is inside; most open in OpenBoardView or FlexBV. What Is a Boardview File and Why You Need One lists the common formats.

With both a schematic and a boardview you can find a net on the diagram and then locate the same part on the board by its reference designator. No Boardview for Your Board? How to Work Without One shows the workflow.

BIOS notes: versions with a cleaned ME region are included. Read and save the original chip contents before you write anything to it — Keeping the Windows Product Key (MSDM) When Reflashing a BIOS.

Compatible models

Files for Apple iMac A1419 820-4652

Schematics 2 All schematics →

Boardview files 1 All boardview files →

BIOS and firmware 2 All bios and firmware →

Frequently asked questions

Which laptops use the 820-4652 motherboard?
File names in the catalog tie 820-4652 to the Apple iMac A1419. Laptops sold under one model name can use different boards, so confirm by the code printed on the motherboard.
Which revision of 820-4652 do I have?
Files for this board mention Rev A. The revision is printed on the PCB silkscreen, usually next to the board code. Pick files with the same revision when you can; if yours is not listed, the closest revision is usually fine for the schematic but check part positions in the boardview carefully.
How do I open the 820-4652 boardview file?
The 820-4652 boardview comes inside an archive whose name does not state the format. Unpack it and check the extension; most laptop boardviews open in OpenBoardView or FlexBV. See What Is a Boardview File and Why You Need One.
What should I check before flashing the 820-4652 BIOS?
Read the original chip with a programmer and save two copies before writing anything. A dump from another board carries that board's serial number and MAC address, so restore yours from the backup.

Guides for this board

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Files are hosted on Telegram by third parties; ExcitingSpas.com only links to public posts. Check that a file matches your board before using it. Disclaimer · Report a file