Italian, 54 years old, passionate Apple customer and user since 1984.
質問
So I have this 820-00928-A board (A1707 - 2017) with a missing capacitor, just under the right speaker connector. The...
続きを読むGreetings. Someone brought me an iMac 21.5” - 2019 - which doesn’t chime and doesn’t boot. The fan spins normally when a...
続きを読むHi all. I received this A1502 Mid 2014 with a weird behaviour. Once it boots, everything works perfectly. Once it's been...
続きを読むI thought someone could benefit by the info that I solved this issue by disconnecting the wifi card. I already tried...
続きを読むHi all. So I got this iMac 27” Late 2015 with a mechanical HD. It was behaving normally. I left it there sitting for a...
続きを読むHi. I was brought this iMac 21.5 late 2012 today, running on Yosemite with 16GB and a 500GB KINGSTON SV300S37A480G SSD....
続きを読むHi all. I’m quite new at trying to troubleshoot logic boards, and have very little knowledge, but I’m trying to learn. So,...
続きを読むSo a friend of mines brought me his old MB Air A1304 (Late 2008). No sign of life. The green light of the power supply is...
続きを読むHi all. The MBP 15” Late 2011 I’m dealing with shows a black display. The Apple logo is not lit and a flashlight behind it...
続きを読むSo I have these two drives: a 1GB IBM DPES 31080S. It’s marked with the Apple logo and it was the (perfectly working)...
続きを読む回答
I have the notorious problem with this logic board. On top of that, the board has had an attempt to work on the touchbar area, which looks pretty devastated. I tried every OS and everything failed, but installing Sonoma (with Open Core Patcher) did the trick. Of course the touchbar still doesn't work and never will, but the machine boots up without asking for the "critical update" anymore. Maybe someone else can try the same and let us all know how it goes. Best of luck, guys.
続きを読むSame issue. Replaced PSU unit with a known good one, no result. It really could be anything, from ram to graphics card or a component on the logic board. Not sure I want to diagnose everything, given the low value of these machines today.
続きを読むLiquid damage is a real problem. If it occurred, and no matter if the liquid dried in the meantime, it could have caused shorts and corrosion of traces and components. Having said this, have you tried the usual stuff such as SMC and PRAM reset? SMC = while the charger is plugged in, press simultaneously shift+ctrl+alt keys and power button and keep them pressed for 5-10 secs, release them and try to switch the machine on. PRAM = power up the machine and press cmd+alt+p+r on the keyboard before the boot chime. Keep the keys pressed until you hear the chime 2 or 3 times, then release the keys and let it boot. Good luck.
続きを読む修理ガイドのコメント
The cable is just a v-sync. If it’s bad or disconnected, the only “reaction” should be a sort of “trace” left on the screen when dragging windows, not a completely dark screen. That is, the screen should work even without v-sync cable.
Massimo Oriano
@mafomo
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メンバー登録日 08/24/18
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