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Deze versie is geschreven door: Larry Knibb ,

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Tl;dr: another solution to add to the mix. Mine booted with the battery disconnected, i.e. running off mains power only.
 
MyAbout 12-18 months ago, my mid-2012 MBA started giving 3 beeps of death during OS updates (very suspicious that a software update would trigger an apparent RAM HW problem... planned obsolescence?).
MyAbout 12-18 months ago, my mid-2012 MBA started giving 3 beeps of death during OS updates (very suspicious that a software update would trigger an apparent RAM HW problem... planned obsolescence?).
 
First time scared the !&&* out of me. Knowing the RAM is soldered on and suspecting a short due to dust, I opened it up, disconnected the battery, vacuumed it thoroughly, put it back together and it still didn’t work. Left it overnight on charge and it booted fine in the morning... weird. Thought maybe some dust came loose overnight which un-shorted the RAM.
 
Second time I zapped the PRAM and it came right back to life. Kicked myself for not thinking of that the first time.
 
A few successful OS updates later, I thought maybe it had grown out of the 3 beeps issue but last night it happened again for the third time. PRAM reset didn’t work. Vacuuming didn’t produce instant results. Disconnecting and reconnecting the battery after a while didn’t work also. Too impatient to wait overnight so was playing around and found I could boot it up just fine with the back off, battery disconnected but the power cable attached.
 
So now I’m thinking it might be a battery problem. I had the battery replaced about three years ago so maybe it’s time for a new one.
 
Machine is currently finishing off the OS install it hadn’t completed last night when it started beeping at 5am while I’m being extra careful not to knock the MagSafe power cable off :)
 
After that I’ll shut it down and reconnect the battery. My suspicion is that there is no issue outside the OS update cycle, so I’m betting it comes right back to life.
 
[image|1398595]
 
Update: battery may have been a red herring after all. When the OS update completed on mains power only, I shut down, reconnected the battery and was back to the 3 beeps. At this point I thought it confirmed the battery issue, but I tried the same trick of running off mains power only and this time it also gave the 3 beeps of death *sigh*.
 
So now I'm back to my original theory that it's dust and the plugging and unplugging simply moved the machine around a bit and partially dislodged the dust. After a bit more agitation it came back to life. Haven't restarted yet. Might not restart for a while :)

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Bewerkt door: Larry Knibb ,

Tekst:

Tl;dr: another solution to add to the mix. Mine booted with the battery disconnected, i.e. running off mains power only.
 
My mid-2012 MBA started giving 3 beeps of death during OS updates (very suspicious that a software update would trigger an apparent RAM HW problem... planned obsolescence?).
 
First time scared the !&&* out of me. Knowing the RAM is soldered on and suspecting a short due to dust, I opened it up, disconnected the battery, vacuumed it thoroughly, put it back together and it still didn’t work. Left it overnight on charge and it booted fine in the morning... weird. Thought maybe some dust came loose overnight which un-shorted the RAM.
 
Second time I zapped the PRAM and it came right back to life. Kicked myself for not thinking of that the first time.
 
A few successful OS updates later, I thought maybe it had grown out of the 3 beeps issue but last night it happened again for the third time. PRAM reset didn’t work. Vacuuming didn’t produce instant results. Disconnecting and reconnecting the battery after a while didn’t work also. Too impatient to wait overnight so was playing around and found I could boot it up just fine with the back off, battery disconnected but the power cable attached.
 
So now I’m thinking it might be a battery problem. I had the battery replaced about three years ago so maybe it’s time for a new one.
 
Machine is currently finishing off the OS install it hadn’t completed last night when it started beeping at 5am while I’m being extra careful not to knock the MagSafe power cable off :)
 
After that I’ll shut it down and reconnect the battery. My suspicion is that there is no issue outside the OS update cycle, so I’m betting it comes right back to life.
 
[image|1398595]
 
Update: battery may have been a red herring after all. When the OS update completed on mains power only, I shut down, reconnected the battery and was back to the 3 beeps. At this point I thought it confirmed the battery issue, but I tried the same trick of running off mains power only and this time it also gave the 3 beeps of death *sigh*.
 
So now I'm back to my original theory that it's dust and the plugging and unplugging simply moved the machine around a bit and partially dislodged the dust. After a bit more agitation it came back to life. Haven't restarted yet. Might not restart for a while :)

Status:

open

Origineel bericht door: Larry Knibb ,

Tekst:

Tl;dr: another solution to add to the mix. Mine booted with the battery disconnected, i.e. running off mains power only.

My mid-2012 MBA started giving 3 beeps of death during OS updates (very suspicious that a software update would trigger an apparent RAM HW problem... planned obsolescence?).

First time scared the !&&* out of me. Knowing the RAM is soldered on and suspecting a short due to dust, I opened it up, disconnected the battery, vacuumed it thoroughly, put it back together and it still didn’t work. Left it overnight on charge and it booted fine in the morning... weird. Thought maybe some dust came loose overnight which un-shorted the RAM.

Second time I zapped the PRAM and it came right back to life. Kicked myself for not thinking of that the first time.

A few successful OS updates later, I thought maybe it had grown out of the 3 beeps issue but last night it happened again for the third time. PRAM reset didn’t work. Vacuuming didn’t produce instant results. Disconnecting and reconnecting the battery after a while didn’t work also. Too impatient to wait overnight so was playing around and found I could boot it up just fine with the back off, battery disconnected but the power cable attached.

So now I’m thinking it might be a battery problem. I had the battery replaced about three years ago so maybe it’s time for a new one.

Machine is currently finishing off the OS install it hadn’t completed last night when it started beeping at 5am while I’m being extra careful not to knock the MagSafe power cable off :)

After that I’ll shut it down and reconnect the battery. My suspicion is that there is no issue outside the OS update cycle, so I’m betting it comes right back to life.

Status:

open