Your Guide to the MacBook 820-00239 Boardview
If you’re a technician wrestling with a MacBook Pro A1708 that refuses to turn on, charge, or is behaving erratically, you’ve likely encountered the model number 820-00239. For anyone serious about logic board repair, finding and understanding the 820-00239 Boardview file is the difference between hours of frustration and a successful, efficient fix.
In this guide, we’ll break down exactly what the 820-00239 boardview is, why it’s an indispensable tool, and how it can transform your repair process.
What is the 820-00239 Logic Board?
First, let's identify the hardware. The 820-00239 is the logic board model found in the 13-inch MacBook Pro (A1708) from 2017. This model is part of Apple's transition to more compact, integrated designs, featuring soldered RAM and complex power management systems. Common issues with this board include:
No Power (PPBUS_G3H issues)
Charging Problems
Backlight Failure (No image, but you can see one with a flashlight)
Liquid Damage
Tackling these problems without a roadmap is a shot in the dark. This is where the boardview file becomes your most critical tool.
What is a Boardview File and Why Do You Need It?
A schematic diagram shows you the electrical theory of the board—how components are connected. A boardview file, on the other hand, is the physical map.
When you open the 820-00239 boardview file in a program like OpenBoardView, "BoardViewer," or "FlexBV," you see an interactive diagram of the actual logic board. It allows you to:
Identify Components Instantly: Click on a tiny component (like a resistor or capacitor) on the board, and the boardview will highlight it and give you its reference designator (e.g., R5510, C1234).
Trace Signal Paths: Easily follow voltage rails and data lines across the board to locate breaks or short circuits.
Find Test Points: Quickly locate crucial test points for voltage measurements, saving you from probing random areas.
Without the 820-00239 boardview, you're essentially working blind. With it, you can pinpoint the exact location of a faulty component that a schematic has identified as problematic.
How to Use the 820-00239 Boardview for Common Repairs
Let’s take a common scenario: No Power.
Initial Check: You find there's no PPBUS_G3H (the main system power rail).
Consult the Schematic: The schematic points to the charging circuit, implicating the U7000 (CD3215) ICs.
Open the Boardview: This is where the magic happens. The schematic tells you to check a signal, say
PP3V3_G3H_RTC, on a specific pin of U7000.Pinpoint the Location: In the boardview, you search for that net name. It will highlight the exact via or component pad on the physical U7000 chip where you need to place your multimeter probe. No more guessing or accidentally shorting adjacent pins!
This precise targeting drastically reduces diagnostic time and prevents accidental damage to the board.