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- 09:44, 27 October 2023 ASRepairs talk contribs created page MacBook Pro A1708 Charger not turning on USB-C meter repair (Created page with "{{stub}} {{Repair Guide |Device= |Affects parts= |Needs equipment= |Type= |Difficulty= }} ==Problem description== When charging the A1708 MacBook with a USB-C charger and measuring the input current and voltage with a USB-C meter, the meter does not even turn on at all or 0 current. thumb|Example image (Figure 1) -- No image yet. Help expand this page by uploading it! ==Symptoms== *MacBook not turning on. *All voltages missing. *Not chargin...") Tag: Visual edit
- 09:40, 27 October 2023 ASRepairs talk contribs created page MacBook Pro A1708 Charger stuck at 5V instead of 20V repair (Created page with "{{stub}} {{Repair Guide |Device= |Affects parts= |Needs equipment= |Type= |Difficulty= }} ==Problem description== Charging voltage from USB-C charger is stuck at 5V instead of 20V. For more information about this problem, check Charger stuck at 5V instead of 20V on MacBooks thumb|Example image (Figure 1) -- No image yet. Help expand this page by uploading it! ==Symptoms== *Not charging *Most likely not turning on *Drawing very little...") Tag: Visual edit
- 09:32, 27 October 2023 ASRepairs talk contribs created page Charger stuck at 5V instead of 20V on MacBooks (Created page with "{{Explanatory Guide}} USB-C MacBooks get charged through their USB-C ports, using USB-C PD standard which allows to deliver high power through a USB-C connector by raising the voltage higher than the regular 5 volts we've been used to on legacy USB ports. This requires a handshake between the laptop and the charger through a dedicated data bus, so that the charger can tell the laptop what its capabilities are, and so the laptop can then request a higher voltage, if avai...") Tag: Visual edit
- 09:27, 27 October 2023 ASRepairs talk contribs created page MacBook Pro A1708 Not turning on, pulling 0.35A at 20V repair (Created page with "{{stub}} {{Repair Guide |Device= |Affects parts= |Needs equipment= |Type= |Difficulty= }} ==Problem description== <nowiki>#</nowiki>incomplete Provide a concise description of the issue here. Be as specific as possible to help readers quickly determine whether or not this is the exact problem they are facing. thumb|Example image (Figure 1) -- No image yet. Help expand this page by uploading it! ==Symptoms== *Not turning on *Pulling 350...") Tag: Visual edit
- 09:24, 27 October 2023 ASRepairs talk contribs created page MacBook Pro A1708 Not turning on, PPBUS G3H shorted to ground repair (Created page with "{{stub}} {{Repair Guide |Device= |Affects parts= |Needs equipment= |Type= |Difficulty= }} ==Problem description== <nowiki>#</nowiki>incomplete thumb|Example image (Figure 1) -- No image yet. Help expand this page by uploading it! ==Symptoms== *sub 20 ohms on PPBUS_G3H *Not turning on ==Solution== How to find short circuits Inject 1 V (increase if no reaction), watch for hot spots with thermal cam. Usually it's a bad tantalum cap on t...") Tag: Visual edit
- 09:21, 27 October 2023 ASRepairs talk contribs created page MacBook Pro A1708 Not turning on, pulling 0.02A at 20V repair (Created page with "{{stub}} {{Repair Guide |Device= |Affects parts= |Needs equipment= |Type= |Difficulty= }} ==Problem description== <nowiki>#</nowiki>incomplete thumb|Example image (Figure 1) -- No image yet. Help expand this page by uploading it! ==Symptoms== *Not turning on *Pulling 20 milliamps at 20V as measured by USB-C meter ==Solution== * Constant low power draw (10–20 mA): Short to ground on power rail (can be PPBUS_G3H, PP3V3_S5, PP3V3_S4,...)...") Tag: Visual edit
- 09:17, 27 October 2023 ASRepairs talk contribs created page File:ThermalCamera-20V40mA.jpg
- 09:17, 27 October 2023 ASRepairs talk contribs uploaded File:ThermalCamera-20V40mA.jpg
- 09:12, 27 October 2023 ASRepairs talk contribs created page MacBook Pro A1708 Not turning on, pulling 0.04A at 20V repair (Created page with "{{stub}} {{Repair Guide |Device= |Affects parts= |Needs equipment= |Type= |Difficulty= }} ==Problem description== <nowiki>#</nowiki>incomplete thumb|Example image (Figure 1) -- No image yet. Help expand this page by uploading it! ==Symptoms== *Not turning on *Pulling 40 milliamps (0.04A) at 20V as measured by USB-C meter ==Solution== * PP5V_S4 is missing but not shorted. Corrosion on R1451, need to replace and make a jumper because a pad...") Tag: Visual edit
- 09:08, 27 October 2023 ASRepairs talk contribs created page MacBook Pro A1708 Not turning on, no current draw at 20V with no shorts repair (Created page with "{{stub}} {{Repair Guide |Device= |Affects parts= |Needs equipment= |Type= |Difficulty= }} ==Problem description== <nowiki>#</nowiki>incomplete thumb|Example image (Figure 1) -- No image yet. Help expand this page by uploading it! ==Symptoms== *Not turning on *Drawing 0A (no current) on 20V as measured by USB-C meter ==Solution== ===Diagnostic Steps=== ==== Check for low resistance to ground on SMBUS_SMC_5_G3H_SDA or SMBUS_SMC_5_G3H_SCL =...") Tag: Visual edit
- 09:01, 27 October 2023 ASRepairs talk contribs created page MacBook Pro A1708 Not turning on, no current draw at 5V repair (Created page with "{{stub}} {{Repair Guide |Device= |Affects parts= |Needs equipment= |Type= |Difficulty= }} ==Problem description== <nowiki>#</nowiki>incomplete thumb|Example image (Figure 1) -- No image yet. Help expand this page by uploading it! ==Symptoms== *MacBook not turning on *Drawing 0.00A at 5V (No current draw) ==Solution== PP3V3_G3H is most likely shorted to ground with a 0–1 Ω short, most likely due to bad capacitor. When PP3V3_G3H is direc...") Tag: Visual edit
- 08:59, 27 October 2023 ASRepairs talk contribs moved page MacBook Air A1708 Not turning on, pulling 2.1A at 20V repair to MacBook Pro A1708 Not turning on, pulling 2.1A at 20V repair
- 08:59, 27 October 2023 ASRepairs talk contribs created page MacBook Air A1708 Not turning on, pulling 2.1A at 20V repair (Created page with "{{stub}} {{Repair Guide |Device= |Affects parts= |Needs equipment= |Type= |Difficulty= }} ==Problem description== <nowiki>#</nowiki>incomplete thumb|Example image (Figure 1) -- No image yet. Help expand this page by uploading it! ==Symptoms== *MacBook not turning on *Pulling 2.1A at 20V as measured by a USB-C meter ==Solution== U7100, PROG1 250 Ω short – replace U7100.") Tag: Visual edit
- 08:54, 27 October 2023 ASRepairs talk contribs created page MacBook Air A1932 No display backlight repair (Created page with "{{stub}} {{Repair Guide |Device= |Affects parts= |Needs equipment= |Type= |Difficulty= }} ==Problem description== Identifying and solving backlight issues on the ''820-01521'' logic board, as well as similar boards from 2016-2020. A MacBook with no backlight on the display is experiencing an issue where the screen remains dark even though the computer is powered on and operational. This means that while the computer itself may be functioning, the display is not emitting...") Tag: Visual edit
- 08:45, 27 October 2023 ASRepairs talk contribs created page MacBook Air A1932 No camera detected repair (Created page with "{{stub}} {{Repair Guide |Device= |Affects parts= |Needs equipment= |Type= |Difficulty= }} ==Problem description== Addressing issues with MacBook A1932 with logic board 820-01521 not detecting the camera. thumb|Example image (Figure 1) -- No image yet. Help expand this page by uploading it! ==Symptoms== * Camera not detected * Possible burned or exploded L8570 filter on TCON board ==Solution== ===Diagnostic Steps=== ====Check L8570 Contin...") Tag: Visual edit
- 08:40, 27 October 2023 ASRepairs talk contribs created page MacBook Air A1932 No keyboard backlight after screen replacement repair (Created page with "{{stub}} {{Repair Guide |Device= |Affects parts= |Needs equipment= |Type= |Difficulty= }} ==Problem description== Most cases of no keyboard backlight after a screen replacement will be due to an incorrect part being installed. The ambient light sensor (ALS) is used to control keyboard backlight. The ALS is different between 2018 and 2019 model A1932 MacBook Air devices, and are incompatible due to firmware. If a 2019 screen is installed on a 2018 device, keyboard backlig...") Tag: Visual edit
- 08:37, 27 October 2023 ASRepairs talk contribs created page MacBook Air A1932 Not turning on, pulling 0.03-0.06A at 20V repair (Created page with "{{stub}} {{Repair Guide |Device= |Affects parts= |Needs equipment= |Type= |Difficulty= }} ==Problem description== No Power, 20v and ~0.03-0.06A current draw on the820-01521 logic board diagnosis and repair. '''NOTE: This is an evolving issue, seen on many T2 series boards, and there is no fix for many of these cases as of 12/2/21. This article will be updated if/when a fix becomes available. See below for possible causes.''' File:Placeholder image.jpg|thumb|Example im...") Tag: Visual edit
- 08:29, 27 October 2023 ASRepairs talk contribs created page MacBook Air A1932 Not turning on, missing P5VG3S EN signal repair (Created page with "{{stub}} {{Repair Guide |Device= |Affects parts= |Needs equipment= |Type= |Difficulty= }} ==Problem description== When the 820-01521 board is not turning on and P5VG3S_EN signal is missing, it might be a dead or corrupted T2 chip. thumb|Example image (Figure 1) -- No image yet. Help expand this page by uploading it! ==Symptoms== * MacBook not turning on * P5VG3S_EN signal is low or missing ==Solution== ===Diagnostic Steps=== ====Check for...") Tag: Visual edit
- 14:28, 22 October 2023 ASRepairs talk contribs created page MacBook Air A1932 High fan speed, slow or hanging on boot at the Apple logo and progress bar repair (Created page with "{{stub}} {{Repair Guide |Device= |Affects parts= |Needs equipment= |Type= |Difficulty= }} ==Problem description== MacBook Air A1932 slow, hanging on the apple logo and progress bar with fans spinning very fast thumb|Example image (Figure 1) -- No image yet. Help expand this page by uploading it! ==Symptoms== *High fan speed *Slow or hanging on the apple logo and progress bar ==Solution== ===Diagnostic Steps=== ==== Check that the battery...") Tag: Visual edit
- 14:15, 22 October 2023 ASRepairs talk contribs created page File:Wirewound resistor.png
- 14:15, 22 October 2023 ASRepairs talk contribs uploaded File:Wirewound resistor.png
- 13:52, 22 October 2023 ASRepairs talk contribs created page MacBook Air A1932 Not turning on, pulling very low current at 5V or 20V repair (Created page with "{{stub}} {{Repair Guide |Device= |Affects parts= |Needs equipment= |Type= |Difficulty= }} ==Problem description== Diagnosing and resolving issues where a MacBook (820-01521) is pulling very little current at either 5V or 20V as indicated by a USB-C current meter with SLPS2R and AWAKE voltages/signals cycling. thumb|Example image (Figure 1) -- No image yet. Help expand this page by uploading it! ==Symptoms== *MacBook not turning on *Very lo...") Tag: Visual edit
- 13:15, 22 October 2023 ASRepairs talk contribs moved page Repair Basics - Resistors to Resistors - Repair Basics
- 12:46, 22 October 2023 ASRepairs talk contribs created page File:Resistor measurement.png
- 12:46, 22 October 2023 ASRepairs talk contribs uploaded File:Resistor measurement.png
- 12:23, 22 October 2023 ASRepairs talk contribs created page File:Example measurement pictures.jpg
- 12:23, 22 October 2023 ASRepairs talk contribs uploaded File:Example measurement pictures.jpg
- 12:23, 22 October 2023 ASRepairs talk contribs created page File:Example pcb pictures.jpg
- 12:23, 22 October 2023 ASRepairs talk contribs uploaded File:Example pcb pictures.jpg
- 12:22, 22 October 2023 ASRepairs talk contribs created page File:Example device pictures.jpg
- 12:22, 22 October 2023 ASRepairs talk contribs uploaded File:Example device pictures.jpg
- 12:19, 22 October 2023 ASRepairs talk contribs created page MacBook Air A1932 Not turning on, pulling 0.10-0.25 A at 5V cycling repair (Created page with "{{stub}} {{Repair Guide |Device= |Affects parts= |Needs equipment= |Type= |Difficulty= }} ==Problem description== Diagnosis and repair for MacBook Air 820-01521 that is not turning on, pulling 0.10-0.25 A at 5V as measured with the USB-C meter while cycling. "Cycling" is a condition where the USB-C current meter turns on, displays a voltage and current, shuts off, and turns back on displaying a voltage and current again. This will happen continuously in a loop. This cond...") Tag: Visual edit
- 12:08, 22 October 2023 ASRepairs talk contribs created page MacBook Air A1932 Not turning on, pulling 0.00-0.02A at 5V repair (Created page with "{{stub}} {{Repair Guide |Device= |Affects parts= |Needs equipment= |Type= |Difficulty= }} ==Problem description== Diagnosing and resolving issues where a MacBook (820-01521) remains stuck on 5V with low current draw (~0.00–0.02 A) as indicated by a USB-C current meter. Commonly, this is attributed to a short to ground on the PPBUS_G3H power rail. Differentiate this from cases where one port reads 5V ~0.12–0.25 A while another reads 5V ≈5V 0.02 A (CD3215 issue), and...") Tag: Visual edit
- 21:40, 14 October 2023 ASRepairs talk contribs created page Repair Basics - Resistors (Created page with "{{Explanatory Guide}}This article aims to provide a comprehensive overview of resistors from a repair perspective, detailing their function, types, common issues, testing methods, and replacement considerations. thumb|Resistor symbols commonly found in schematics (Figure 1) ==What is a resistor?== A resistor is a fundamental electrical component found in every single electronic device and circuit. '''Its role is controlling the flow of elec...") Tag: Visual edit
- 21:39, 14 October 2023 ASRepairs talk contribs created page File:Resistor types.png
- 21:39, 14 October 2023 ASRepairs talk contribs uploaded File:Resistor types.png
- 21:29, 14 October 2023 ASRepairs talk contribs created page File:Smd resistor example.png
- 21:29, 14 October 2023 ASRepairs talk contribs uploaded File:Smd resistor example.png
- 20:20, 14 October 2023 ASRepairs talk contribs created page File:Voltage divider circuit.png
- 20:20, 14 October 2023 ASRepairs talk contribs uploaded File:Voltage divider circuit.png
- 20:08, 14 October 2023 ASRepairs talk contribs created page File:Resistor symbols.jpg
- 20:08, 14 October 2023 ASRepairs talk contribs uploaded File:Resistor symbols.jpg
- 19:26, 14 October 2023 ASRepairs talk contribs created page Template:Explanatory Guide/Example (Created page with "{{Explanatory Guide}}")
- 14:58, 14 October 2023 ASRepairs talk contribs created page MacBook Pro A1989 No backlight after waking from sleep (black screen) repair (Created page with "{{stub}} {{Repair Guide |Device= |Affects parts= |Needs equipment= |Type= |Difficulty= }} ==Problem description== Black screen after returning from sleep (no backlight but has picture) thumb|Example image (Figure 1) -- No image yet. Help expand this page by uploading it! ==Symptoms== *MacBook works normally, but after waking up from sleep there is no backlight anymore ==Solution== Lid detect sensor (J4800 or J4801) missing PP1v8_SLPS2R or...") Tag: Visual edit
- 14:55, 14 October 2023 ASRepairs talk contribs created page MacBook Pro A1989 No Vcore voltage repair (Created page with "{{stub}} {{Repair Guide |Device= |Affects parts= |Needs equipment= |Type= |Difficulty= }} ==Problem description== MacBook A1989 has no CPU core coltage "Vcore" thumb|Example image (Figure 1) -- No image yet. Help expand this page by uploading it! ==Symptoms== *Not turning on ==Solution== Most likely caused by corrosion around U7100, resolder joints and check again.") Tag: Visual edit
- 14:50, 14 October 2023 ASRepairs talk contribs created page MacBook Pro A1989 "Braindead" repair (Created page with "{{stub}} {{Repair Guide |Device= |Affects parts= |Needs equipment= |Type= |Difficulty= }} ==Problem description== Any shorted subrail on A1990 machines can cause the machine to hang on POST.thumb|Example image (Figure 1) -- No image yet. Help expand this page by uploading it! ==Symptoms== *MacBook hanging on POST ==Solution== *Thermal imaging can reveal abnormal heat caused by a shorted component. *This condition is most frequently caused b...") Tag: Visual edit
- 14:48, 14 October 2023 ASRepairs talk contribs created page MacBook Pro A1989 No image repair (Created page with "{{stub}} {{Repair Guide |Device= |Affects parts= |Needs equipment= |Type= |Difficulty= }} ==Problem description== When the MacBook does turn on but there is no image on the LCD. Backlight may be present but the screen is blackthumb|Example image (Figure 1) -- No image yet. Help expand this page by uploading it! ==Symptoms== *No image on LCD ==Solution== *Check the LCD cable and the connector on both the screen side and the logic board side....") Tag: Visual edit
- 14:47, 14 October 2023 ASRepairs talk contribs created page MacBook Pro A1989 No backlight repair (Created page with "{{stub}} {{Repair Guide |Device= |Affects parts= |Needs equipment= |Type= |Difficulty= }} ==Problem description== Identifying and solving backlight issues on the A1990 MacBook, as well as similar boards from 2016-2020. A MacBook Pro with no backlight on the display is experiencing an issue where the screen remains dark even though the computer is powered on and operational. This means that while the computer itself may be functioning, the display is not emitting any lig...") Tag: Visual edit
- 14:45, 14 October 2023 ASRepairs talk contribs created page MacBook Pro A1989 Battery not recognized repair (Created page with "{{stub}} {{Repair Guide |Device= |Affects parts= |Needs equipment= |Type= |Difficulty= }} ==Problem description== MacBook A1989 not recognizing the connected batterythumb|Example image (Figure 1) -- No image yet. Help expand this page by uploading it! ==Symptoms== *MacBook not turning on. *Battery not recognized/charging ==Solution== *First, '''try a known good battery.''' **If it doesn't work, check the battery cable going to the board. **...") Tag: Visual edit
- 14:44, 14 October 2023 ASRepairs talk contribs created page MacBook Pro A1989 Charger not turning on USB-C meter repair (Created page with "{{stub}} {{Repair Guide |Device= |Affects parts= |Needs equipment= |Type= |Difficulty= }} ==Problem description== When charging the A1989 MacBook with a USB-C charger and measuring the input current and voltage with a USB-C meter, the meter does not even turn on at all or 0 current.thumb|Example image (Figure 1) -- No image yet. Help expand this page by uploading it! ==Symptoms== *MacBook not turning on. *All voltages missing. *Not charging...") Tag: Visual edit
