More actions
No edit summary |
No edit summary |
||
| Line 2: | Line 2: | ||
|Device=MacBook Air A2337 | |Device=MacBook Air A2337 | ||
|Affects parts=Motherboard | |Affects parts=Motherboard | ||
|Type= | |Type=Soldering | ||
|Difficulty=3. Hard | |Difficulty=3. Hard | ||
}} | }} | ||
Latest revision as of 15:18, 29 October 2023
| MacBook Air A2337 No sound from speakers repair | |
|---|---|
| Device | MacBook Air A2337 |
| Affects part(s) | Motherboard |
| Needs equipment | |
| Difficulty | ◉◉◉◌ Hard |
| Type | Soldering |
This article is a stub. You can help Repair Wiki grow by expanding it
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.