Yea... unfortunately, I am aware of what I did. I attempted a DFU restore, and before that, the laptop was at least "attempting" to start when pressing the power button. Now, I need to do that by a DFU update.

That being said, there are no signs of corrosion or damage, including the resistance measurements in wing sectors.

Anyway, based on my experience with the DFU update process, when Apple Configurator reaches step 4/4 (update), it first writes the image/firmware to the SSD partition and then attempts to start the processor and the rest of the system (around...

Thank you for your answer.

Apologies about PPBUS_G3H rail typo, My actual readings are:[LIST][*]PPBUS_G3H: [B]12.62 V [/B][/LIST][B]And[/B] of course it is about board 820-01700

According to repair wiki steps:

My measurements:

[Diode Mode]:[LIST][*]PP2v5_NAND_SSD1: [B]0.439 V[/B][*]PP2v5_NAND_SSD0: [B]0.395 V[/B][*]PP1v8_SSD1: [B]0.425 V[/B][*]PP1v8_SSD0: [B]0.372 V[/B][*]PP0v9_SSD1: [B]0.490 V[/B][*]PP0v9_SSD0: [B]0.423 V[/B][*]PP3v3_S5: [B]0.333 V[/B][/LIST][Resistance to GND]:[LIST][*]PP2v5_NAND_SSD1: [B]29.8 kΩ[/B][*]PP2v5_NAND_SSD0: [B]29.5...

Hello everyone,

This is my first post on the forum

I recently purchased a MacBook A2141 from a colleague at work, which had issues with the dedicated GPU. The system occasionally displayed artifacts on the screen and sometimes experienced kernel panics related to the GPU. Interestingly, applying pressure to the VRAM module would temporarily resolve the artifact issues, which made me optimistic about the ease of repair.

Board: 020-01700, Config: Intel i7, 512GB SSD, 16GB Ram.

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