⟐ Answered April 04, 2026 at 1:44 MST

⟐ Answer edited March 28, 2026 at 17:42 MST

Thanks

⟐ Commented March 16, 2026 at 8:00 MST

⟐ Commented March 12, 2026 at 15:12 MST

Photo #1: Screen with yellow line issue.

Photo #2: Original cord has electrical tape on wire. (I bought it like this.)

THANKS!

⟐ Commented March 06, 2026 at 11:21 MST

I know that the MagSafe 1 charger works as the light illuminates when I use my older 2012 MacBook Pro and 2010 MacBook Air.

Is the light supposed to illuminate when using the adapter or is my adapter defective? I tried to clean both the MagSafe 1 plug and both sides of the adapter and the MagSafe port with isopropyl alcohol but that didn't seem to fix things.

⟐ Answered March 03, 2026 at 17:36 MST

⟐ Answer edited March 02, 2026 at 8:53 MST

⟐ Commented February 27, 2026 at 18:56 MST

Only F1 to F15 are malfunctioning, all other buttons are normal, how to fix it by myself?

⟐ Commented February 23, 2026 at 19:15 MST

⟐ Answer edited February 19, 2026 at 16:34 MST

⟐ Answer accepted February 13, 2026 at 23:16 MST

⟐ Answer edited February 10, 2026 at 12:50 MST

⟐ Commented January 30, 2026 at 11:20 MST

Deep in the weeds with this THUNDERBOLT 27" display -I have no screen, and the thunderbolt connection not detected by an external computer, but power is getting to the logic board just fine. Tested the G, 12V, and 24V rails and power is fine on the logic board. When testing the smaller panel test points, fan, usb, etc. works great, but no power at the LCD power panel test points (Just to the left of the circled component in the pic attached). There should be 12v there according to the Technician's manual.

Ok, but there IS 12V right at the circled component on the one leg at the bottom, but 0 volts on either of the other two legs! So I suspect this part has failed.

Now the help! What is this part? Voltage divider or detector? It's labeled with either a "AM K" or "1 AM K" (K is sideways) although the 1 might just be a line indicating directionality? These components are all over the board and always gives voltage readings on all legs, so that's why I suspect this one is bad. Any super smart SMD folks know what this part is?

⟐ Commented January 21, 2026 at 18:21 MST

2009 MacPro 2 x 2.26 Ghz Quad core Intel Xeon / 32 GB memory silver tower (Model No.A1289). 30” Cinema HD Display aluminum monitor with 2560x1600 resolution. Bought new - its a beautiful display and once a primo $5K workstation. I’ve been running OS 10.6.8 on it to continue using some obsolete legacy apps I happen to love. I also own a newer 27" iMac.

From the beginning, this display got very hot, so I’ve always had a small quiet fan blowing across the back of it. Starting years ago, for no apparent reason, the monitor would intermittently go “completely black”, usually after a few hours, while I’m doing nothing more than typing or moving the mouse. And the tiny green light in front bottom right goes out. After a few minutes, it might flicker back on and stay on, but eventually go black again. At first I’d restart the MacPro, which often helped. Then it didn’t help. I asked around, tried zapping PRAM and firmware updates.

Experimenting, I found the oval/racetrack-shaped plug connection (don’t know the proper term) in the 3-way cable that connects the monitor to the “Dual-link DVI” adapter brick (Apple HD Display 150W Power Adapter A1098) may be the problem, because unplugging and replugging it fixes the issue temporarily. But invariably, after some time, the monitor goes black again. As time goes by, I’d unplug/replug this adapter connection plug 3, 4, 5 times a day. Eventually after many mos. of unplugging & replugging, even that won’t get the monitor going again.

So I found a used adapter on eBay ($75+) and replacing it seemed to fix the problem. But after a few months, up to a year, the monitor starts to flicker/go black again. Frustrated, I buy another adapter, which gets the monitor going again, but eventually stops. I did this many times over the past 7 years. At this point, it seems likely I’m buying others’ problem adapters. Now my 5th used adapter no longer works after only 2 months, the plastic plug guard on the cable from the monitor has broken and it looks like replacing the three-way monitor cable is the only way forward.

I’m finally posting this request for help in exasperation. Thanks for reading it all!

Is there a way to confirm what the problem is, that replacing the cable would fix it? (e.g., could it be a logic or power board or graphics card?).

Is a cable still available? How to get the right one? Saw reports the 3 way cable is non-existent

Can I replace it myself without much tech experience? Checked this ifixit guide and viewed this Youtube video and think I could manage but never done anything more than swap in a graphics card and memory.

What I’ve tried:

- Unplugged replugged the cord from the MacPro to the DVI adapter

- Zapped PRAM

- Contacted Apple (“Obsolete hardware and systems aren’t supported”)

- Replaced the DVI adapter brick (5 times in 7 years)

- Asked for help on the Apple forum. Determined that its unlikely a graphics card or firmware issue

- Read numerous forum posts including:

• 27” Cinema Display turns off randomly

• How can I fix my display blacking out intermittently?

• I have a 30 inch Apple Cinema Display that just went blank

• Apple LED Cinema Display 27" LED Panel Replacement

• Apple Cinema HD Display 30" Teardown

- Shopped around for other 30” monitors, like this Dell UltraSharp U3014 But a reviewer states it requires a DVI dual link adapter system to work - which is apparently the same thing causing the issue with my Apple monitor

Heres my current adapter. I've kept the last 2 as well, thinking it may not be the adapters at all, but they are identical to this one. For all its life until only a few weeks ago, the (4-way) cord built into the monitor looked newish, but the plastic casing broke recently after I used a clamp to hold it in place into the adapter in frustration. It still worked for a time even with the guts exposed but admittedly it now looks like this is clearly the current reason for the problem even though thats not necessarily the case. I've cleaned the plug shiny many times over the years - and the hole as well - and that made zero difference, so now the metal is tarnished from constant plugging/unplugging.

Thanks for trying to help me!

Had high hopes posting my question here would lead to getting help to fix my monitor. Anyone?

⟐ Answered January 21, 2026 at 14:07 MST

⟐ Answered January 15, 2026 at 15:59 MST

Up until yesterday everything was fine, my Apple Magic Mouse 2 was working correctly on all surfaces.

Suddenly, the Magic mouse has stopped working on most regular surfaces and almost all fabrics (moving the mouse may move the cursor a little bit on these surfaces).

It does work on a transparent nylon, a very soft fabric (EDIT: 100% polyester) and on a leather couch and a specific part of my bare knee. (everything else like touch gestures works).

What is the reason for this? the optical sensor?

I already tried cleaning the optical sensor with a cloth, connecting it to another mac and removing the mouse preferences files with no luck.

Thanks :)

⟐ Commented January 13, 2026 at 7:10 MST

Thunderbolt Display connected to Mac mini 2018 MacOs 10.15.6 via Thunderbolt adapter to USB-C.

I’m skeptical of the display because no issues to TV but that’s HDMI signal not Thunderbolt. I’ve repaired the A1267 and hoping not to mess with this one.

#2-How hot is too hot for this display? Fan is running.

#3-Should Display USB ports always have constant power when Mac is off? Will not charge phone constanlty

Thanks in advance..

What’s supposed to be connected here?

No extra parts found

⟐ Commented January 10, 2026 at 11:38 MST