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27 October 2023
- 08:2908:29, 27 October 2023 diff hist +4,761 N 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
22 October 2023
- 14:2914:29, 22 October 2023 diff hist +55 MacBook Air A1932 High fan speed, slow or hanging on boot at the Apple logo and progress bar repair No edit summary current
- 14:2814:28, 22 October 2023 diff hist +2,306 N 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
- 14:2414:24, 22 October 2023 diff hist +793 Resistors - Repair Basics →Testing a resistor Tag: Visual edit
- 14:1514:15, 22 October 2023 diff hist +18 N File:Wirewound resistor.png No edit summary current
- 14:0714:07, 22 October 2023 diff hist +161 Resistors - Repair Basics →Testing a resistor Tag: Visual edit
- 13:5213:52, 22 October 2023 diff hist +123 MacBook Air A1932 Not turning on, pulling very low current at 5V or 20V repair No edit summary
- 13:5213:52, 22 October 2023 diff hist +1,626 N 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
- 13:4713:47, 22 October 2023 diff hist +2 Resistors - Repair Basics No edit summary Tag: Visual edit
- 13:1713:17, 22 October 2023 diff hist 0 Resistors - Repair Basics No edit summary Tag: Visual edit
- 13:1513:15, 22 October 2023 diff hist +39 N Repair Basics - Resistors ASRepairs moved page Repair Basics - Resistors to Resistors - Repair Basics current Tag: New redirect
- 13:1513:15, 22 October 2023 diff hist 0 m Resistors - Repair Basics ASRepairs moved page Repair Basics - Resistors to Resistors - Repair Basics
- 13:1013:10, 22 October 2023 diff hist +2,191 Resistors - Repair Basics No edit summary Tag: Visual edit
- 12:4612:46, 22 October 2023 diff hist +28 N File:Resistor measurement.png No edit summary current
- 12:4212:42, 22 October 2023 diff hist +2,349 Resistors - Repair Basics No edit summary Tag: Visual edit
- 12:2312:23, 22 October 2023 diff hist 0 N File:Example measurement pictures.jpg No edit summary current
- 12:2312:23, 22 October 2023 diff hist 0 N File:Example pcb pictures.jpg No edit summary current
- 12:2212:22, 22 October 2023 diff hist 0 N File:Example device pictures.jpg No edit summary current
- 12:2012:20, 22 October 2023 diff hist +133 MacBook Air A1932 Not turning on, pulling 0.10-0.25 A at 5V cycling repair No edit summary
- 12:1912:19, 22 October 2023 diff hist +6,480 N 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
- 12:0912:09, 22 October 2023 diff hist +764 MacBook Pro A2251 Not turning on, 0.00-0.05A current draw at 5V repair No edit summary Tag: Visual edit
- 12:0912:09, 22 October 2023 diff hist +133 MacBook Air A1932 Not turning on, pulling 0.00-0.02A at 5V repair No edit summary
- 12:0812:08, 22 October 2023 diff hist +6,927 N 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
17 October 2023
- 16:4816:48, 17 October 2023 diff hist +55 Resistors - Repair Basics No edit summary
14 October 2023
- 21:4221:42, 14 October 2023 diff hist −27 Template:Explanatory Guide No edit summary
- 21:4021:40, 14 October 2023 diff hist +6,244 N Resistors - Repair Basics 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
- 21:3921:39, 14 October 2023 diff hist +14 N File:Resistor types.png No edit summary current
- 21:2921:29, 14 October 2023 diff hist +20 N File:Smd resistor example.png No edit summary current
- 20:2020:20, 14 October 2023 diff hist +33 N File:Voltage divider circuit.png No edit summary current
- 20:0820:08, 14 October 2023 diff hist +58 N File:Resistor symbols.jpg No edit summary current
- 19:3119:31, 14 October 2023 diff hist +168 Template:Create page/many No edit summary
- 19:2619:26, 14 October 2023 diff hist +21 N Template:Explanatory Guide/Example Created page with "{{Explanatory Guide}}" current
- 14:5814:58, 14 October 2023 diff hist +107 MacBook Pro A1989 No backlight after waking from sleep (black screen) repair No edit summary
- 14:5814:58, 14 October 2023 diff hist +539 N 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
- 14:5514:55, 14 October 2023 diff hist +107 MacBook Pro A1989 No Vcore voltage repair No edit summary
- 14:5514:55, 14 October 2023 diff hist +400 N 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
- 14:5314:53, 14 October 2023 diff hist 0 MacBook Pro A1989 Not turning on, short on PPBUS G3H repair No edit summary Tag: Visual edit
- 14:5314:53, 14 October 2023 diff hist 0 MacBook Pro A1989 No backlight repair No edit summary Tag: Visual edit
- 14:5214:52, 14 October 2023 diff hist 0 MacBook Pro A1989 "Braindead" repair No edit summary Tag: Visual edit
- 14:5014:50, 14 October 2023 diff hist +123 MacBook Pro A1989 "Braindead" repair No edit summary
- 14:5014:50, 14 October 2023 diff hist +523 N 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
- 14:4914:49, 14 October 2023 diff hist +107 MacBook Pro A1989 No image repair No edit summary
- 14:4814:48, 14 October 2023 diff hist +980 N 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
- 14:4714:47, 14 October 2023 diff hist +159 MacBook Pro A1989 No backlight repair No edit summary
- 14:4714:47, 14 October 2023 diff hist +1,787 N 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
- 14:4614:46, 14 October 2023 diff hist +132 MacBook Pro A1989 Battery not recognized repair No edit summary
- 14:4514:45, 14 October 2023 diff hist +9 MacBook Pro A1990 Battery not recognized repair No edit summary
- 14:4514:45, 14 October 2023 diff hist +666 N 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
- 14:4414:44, 14 October 2023 diff hist +123 MacBook Pro A1989 Charger not turning on USB-C meter repair No edit summary
- 14:4414:44, 14 October 2023 diff hist +1,444 N 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
