(Created page with "{{Repair Guide |Device= |Affects parts= |Needs equipment= |Type= |Difficulty= }} {{stub}} ==Problem description== Issue with MacBook Air A2337 not playing sound from speakers.thumb|Example image (Figure 1) -- No image yet. Help expand this page by uploading it! ==Symptoms== *No sound from speakers *Not a software issue ==Solution== ===Diagnostic Steps=== ==== Check SPKRAMP_1V8_RESET_L ==== You should measure 1.8V, if you measure 0 volts,...") |
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|Device= | |Device=MacBook Air A2337 | ||
|Affects parts= | |Affects parts=Motherboard | ||
|Type=Soldering, Micro-Soldering | |||
|Type= | |Difficulty=3. Hard | ||
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Revision as of 20:44, 19 September 2023
| MacBook Air A2337 No sound from speakers repair | |
|---|---|
| Device | MacBook Air A2337 |
| Affects part(s) | Motherboard |
| Needs equipment | |
| Difficulty | ◉◉◉◌ Hard |
| Type | Soldering, Micro-Soldering"Micro-Soldering" is not in the list (Soldering, Teardown, Part replacement, Cleaning, Software, BGA, General) of allowed values for the "Repair Guide type" property. |
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Problem description
Issue with MacBook Air A2337 not playing sound from speakers.
Symptoms
- No sound from speakers
- Not a software issue
Solution
Diagnostic Steps
Check SPKRAMP_1V8_RESET_L
You should measure 1.8V, if you measure 0 volts, proceed to the repair steps below.
Repair Steps
No or low SPKRAMP_1V8_RESET_L
- UR900 is most likely the issue.
- Run wire from CR901 pin 2 that has 1.8 volts to pin 1 of CE904 this will force SPKRAMP_1V8_RESET_L high and allow speakers to power up.
Note: As of writing I could not find UR900 (SN74AVC4T234) for purchase it is recommended you replace UR900 but this workaround works fine so far assuming UR900 is being told to turn on and SPKRAMP_RESET_L is present.