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Came in with no display. Retrieved data through target disk mode. Extracted mobo with no visible signs of damage. Connected to monitor through usb, screen backlight comes on but nothing displayed (no apple logo). L7210 0.725v PP5V_S0 5.14v 0.426 PANEL_P5V_EN 0v 0.515 PPBUS_G3H 13v 0.410...

Stopped charging. Worked on battery until battery died. Found corrosion on R3205, R3120_T, and R3208. R3208 was badly damaged so I replaced it. Connect the charger and got 20v. Put the mobo back in and reconnected everything, but then only got 5v.

PP3V3_G3H_T 0v 0.337 PPBUS_G3H 12.59v 0.394 PP2V5_NAND_SSD0 0v 0.269 PP1V8_G3S 0v 0.272 PP5V_G3S 0v 0.380 PP3V3_G3H_SSD0_SNS 3.38v 0.365 Cleaned corrosion around J4802 and Q5100 before readings taken. No corrosion found elsewhere.

Motherboard looks fine but only asking for 5v on both usb-c. U3100 Pin 2 PP1v8_UPC_XA_LDOD = 1.8v, 0.46,, Pin 12 PP3v3_UPC_XA__LDO = 3.39v, 0.486,, Pin 35 PP1v1_UPC_XA_LDO = 1.1v, 0.467,, Pin 75 PP1v8_UPC_XA_LDO = 1.79v, 0.49. U3200 Pin 2 PP1v8_UPC_XB_LDOD = 1.79v, 0.457,, Pin 12...

Hi. I have an A1706 that gets only 5v 200mA on all four usb-c ports. Won't power on obviously. PP3V3_G3H shows 1.2v no matter which usbc I use. The ports looked funky. I took both out and connected a brand new port. Made no difference. Diode mode to ground shows 0.331 on PP3V3-G3H

I found a small amount of corrosion on the usb-c ports. I have cleaned them but the board won't request 20v. I cannot see any damage on the rest of the board. I'm getting 5v 400ma on both sockets. C3100, C3108, C3200, and C3208 are all giving around 3.4v R3000 and R3001 are also giving 3.4v. I'm...