iFixit - Active Questions

MacBook Air 13" Early 2017: This is VERY odd... Unsupported Yosemite as O/S!

Thu, 16 Apr 2026 06:42:10 -0700

This is really strange, This 2017 MacBook Air 13" has a mind of its own.

I boot it up to what I believe was an SSD with Monterey on it and I get either a no entry sign OR I get this.....

This suggests to me that the keyboard or Track Pad or both isn't detected, Yet the power button is working to turn it on and off, but it won't do a PRAM reset..... So I swapped over a new cable and it is the same. All I can do is connect a USB mouse and I get language option OR start up disc.... I checked the start up disc and I get this!

(10.10.5 Yosemite is NOT even supported on a 2017 model as they were originally shipped with Sierra 10.12).

I swapped out the SSD to a KNOWN SSD with Big Sur (Supported) and it is the same, telling me the OS on the SSD is Yosemite!. I thne put another SSD with Monterey pre installed and left at set-up and guess what, it STILL is the same telling me it is Yosemite! I can only think to just put the board into another case with a new keyboard and see if then I can wipe it clean and then to install fresh starting from High Sierra to Catalina, to Monterey (Safest way to get the correct boot ROM firmware installed.... I have NEVER used Yosemite OS and I am absolutely 1000% certain this had either Big Sur or Monterey installed on it's SSD which had not been removed or replaced or anything. Very odd, never seen something like this before. The board is clean, no water damage or anything obvious. Can anyone tell me what and why etc is going on here?

I swapped over the KB case and got into recovery and tried to install Monterey but all I get is a no entry sign..... PRAM was reset.

⟐ Edited by author April 16, 2026 at 6:42 MST

Microsoft Surface Laptop Studio 2: Does anyone know where to source D Plate Screws? Cannot find anywhere

Thu, 16 Apr 2026 06:13:46 -0700

Ive rounded a few screws that hold the d plate, im wondering if this has happened to anyone, whether they sourced the correct screw or if they have used an alternative.

Thanks in advance

Samsung GT-E1205Y: comment faire pour réparer un court circuit

Thu, 16 Apr 2026 05:52:32 -0700

Comment réparer un court circuit si on met la batterie

⟐ Answered April 16, 2026 at 5:52 MST

iMac Intel 21.5" EMC 2428: iMac 2011 only #4 diagnostic LED is lit problem after upgrade

Thu, 16 Apr 2026 05:46:17 -0700

Hi everyone, I am kind of new here so here is my little story which I am having at the moment.
I have been diagnosing my iMac 21 mid 2011 for about a month, and I cannot get it to start back up no matter anything that I've tried and diagnosed, I only get #4 diagnostic LED to lit which is for LCD panel/inverter, nothing else.

First I thought it was the PSU on it's way to failure from age, but purchasing a new replacement didn't made any difference.

Then I've thought the internal connector which goes from power supply to the mb (motherboard) which gives it power and it may have been damaged while I disconnected it from the PSU, and I may have to get it, nothing changed.
But, one interesting thing is that both PSU's giving high pitched noise and "clicks" one or 2 per 3 seconds or so. I can record it as a voice memo if needed.
After that I thought the iMac's chassis may shorting components inside, so I measured voltages with the beeper on multi, everything is fine on that side. (no beeps)

As motherboards rarely fail, I also purchased a replacement, which also did no difference.

I think I have verified everything that could come to my mind, and I simply cannot get it power on no matter what I have tried. I am mostly specialist in laptops, so this is my first attempt and experience on getting inside an iMac.
I really hate throwing electronics away, I always try to diagnose them in every possible way. I have no one to ask and who could assist me in helping with this, as everyone who I know are always with their stuff.

If any more info is needed or I may have something missed during diagnostics, please please let me know, I will very much appreciate it.

⟐ Commented April 16, 2026 at 5:46 MST

Refrigerator: Combină Samsung RB29 FSRNDWW 290 litri Clasa A+ Full no frost

Thu, 16 Apr 2026 05:46:12 -0700

Sub ultimul sertar al congelatorului (de jos) face gheață care se topește și curge pe gresie. Unde este problema ?

HP ProBook 630 G8: My finger print is not working

Thu, 16 Apr 2026 05:37:29 -0700

My finger print is not working

⟐ Answered April 16, 2026 at 5:37 MST

hp Officejet Pro 8600 Pro: printer keeps going off line

Thu, 16 Apr 2026 05:32:58 -0700

printer keeps going off line, how to fix

⟐ Answered April 16, 2026 at 5:32 MST

Nintendo Switch: Can anyone help me identify where this pad lead to?

Thu, 16 Apr 2026 05:30:38 -0700

I tried (& obviously failed) to swap the display flex ZIF socket in the original first-gen Nintendo switch and tore a solder pad off. I’m pretty confident that I can fly a wire out from that remaining bit of solder pad, but I need to check whether I did the job properly. Can anyone tell me where this particular pad(10th from the left not counting the large one) lead to so I can check it with a multimeter or smth?

Thanks in advance!

Other Brand Angle Grinder: Lead shift ,Rewinding 24 bar 12 slot armature

Thu, 16 Apr 2026 05:30:06 -0700

I am rewinding an armature for an old-model metal-bodied Chinese mini angle grinder (approx. 700W-850W, 11,000-12,000 RPM).

Technical Specs:

- Core: 12 slots, 24 commutator bars.

- Dimensions: Core length 55mm, diameter 3.2cm.

- Wire: 32 AWG (0.20mm).

- Winding: Factory was 22 turns/coil (88 wires/slot total), but I plan to use 23 turns/coil (92 wires/slot) to improve torque and heat management.

- Pitch: 1 to 6.

- Progression: Retrogressive (1 -> 24 -> 23).

- Brushes: Positioned 90 degrees from the stator coils.

- Potting: Using two-part submersible pump epoxy (thinned with heat) in a vertical gravity-pour method.

The specific question is about the Lead Shift:

Because I am adding an extra turn (23 instead of 22) and the brushes are at 90 degrees, which lead shift is best to handle the high RPM and field twist?

1. Zero Shift (Bar 1 directly in center of Slot 1).

2. 7.5 Degree Shift (Mica directly in center of Slot 1).

3. 15 Degree Shift (Bar 24, one bar left, in center of Slot 1).

I am leaning toward the 7.5° (Mica Center) shift as a balance, but I'm worried about "fire-ringing" at 11,000 RPM. Has anyone done this specific 23-turn mod on these 12/24 armatures?

By ibot guess, the magnetic shift will ne around 18degree. I can't retrieve any original data of lead shift but from one saved coil, i get continuity from bar24 and 23, assuming first bar in center of slot is bar 1 and winding is retrogressive, connections moving left.

MacBook Air 11" Early 2015: Cause of shutdown when sleeping

Thu, 16 Apr 2026 05:07:45 -0700

What would cause this unit to shutdown after around 20 minutes when put to sleep? We haven't changed any battery or sleep mode settings and the battery is a good one. We can close the lid and open it after a few minutes and all is well, but when it is left closed for say 20 minutes the unit is turned off. We tested it with our clean installed SSD and the same happens..... We have reset the SMC, PRAM, run diagnostics & there are no errors being reported, ..... I have been told this was an issue with Monterey & up, but I never encountered this before....I noticed that when it is connected to a charger it didn't shut down after the lid is closed for a longer time. System is on 12.7.6.....baffled.

⟐ Commented April 16, 2026 at 5:07 MST

C21y: Why my phone is slowly charging

Thu, 16 Apr 2026 05:06:25 -0700

It gets twelve hours to get 100%

⟐ Answered April 16, 2026 at 5:06 MST

JLC JLC47BC3002 Television (47"): JVC SI50UR: Sound but No Picture - Vertical Lines & Tape Fix Attempt

Thu, 16 Apr 2026 04:53:04 -0700

My JVC TV (Model SI50UR) has sound but no picture; it only displays vertical lines. I already tried the DIY trick of placing tape on the flex cable pins, but that only changed the pattern of the lines. Also, when masking certain areas, the lines react to the remote control inputs.

⟐ Commented April 16, 2026 at 4:53 MST

PlayStation 4: Can't install PS4 system software onto new HDD

Thu, 16 Apr 2026 04:31:29 -0700

Hi. Have installed replacement HDD into a PS4 mk1 but am now stuck in a Safe Mode loop of trying to install the latest update .pup file from USB. All other Safe Mode options are locked out. Any ideas..?

⟐ Commented April 16, 2026 at 4:31 MST

MacBook Pro 15" Touch Bar 2019: MacBook bms not working. Please help

Thu, 16 Apr 2026 04:18:33 -0700

So when my bms daughter board cable is plugged in it won't turn on. After installing new ifixit battery and bms cable. It won't turn on with the bms cable. Could it be the security settings? It happend before

⟐ Answer edited April 16, 2026 at 4:18 MST

Galaxy S20: Microphone HS and Charging usb C/usb A doesn't work - SAMSUNG S20 5G

Thu, 16 Apr 2026 04:10:07 -0700

Hi everyone,

About a week ago, my Samsung S20 5G started having issues — it stopped charging with USB-C to USB-C. So I first tried cleaning the USB port, but that didn’t fix it.

A few days later, I also lost mic 1 (the one used for calls).

I then bought and replaced the charging port (daughterboard) without too much trouble, but the issue is still the same after reboot.

Right now:

it charges with USB-A to USB-C
but not with USB-C to USB-C

And now I’m getting a red temperature warning triangle, which even prevents charging with USB-A.

For context, my back cover is cracked, just in case that matters.

I’m running out of ideas at this point, so if anyone has suggestions, I’d really appreciate it!

Thanks in advance to anyone who tries to help! 🙏

HP smart tank 516: It print wrong colour

Thu, 16 Apr 2026 04:05:16 -0700

My printer was printing perfectly, but suddenly I noticed that the colors became faded. It prints black and its shades well, but other colours only prints light orange.

⟐ Answered April 16, 2026 at 4:05 MST

PlayStation 4 Pro: PS4 Pro Displays Black Screen, Even in Safe Mode

Thu, 16 Apr 2026 04:02:05 -0700

Hello, I have a PS4 Pro CUH 7016B, and it has some strange issues. When I got the PS4, it would turn off after some time while playing demanding games, and it also had an overheating warning, so I thought new thermal paste would solve it. I used Arctic MX-6, and I am sure I applied it correctly, as I have done this many times. After reassembling the console, it was still not that quiet, but as far as I know, this is normal for Pros. The next day, I tried testing it further to ensure it was working properly, and in the middle of the game, it beeped three times and turned off. The weird thing is that the fans were not even at max speed, so I am assuming overheating is not an issue. I did not receive any overheating warnings. Sometimes it would also turn off without even beeping. To be completely sure, I reapplied the thermal paste, but that did not change anything. Then I tried testing the PSU with a multimeter, and it was showing 11.86 volts, so that should be okay. The next thing I tried was replacing the HDD, but after doing so, the blue light would flash once before the console turned off. After trying to power it on a few more times, it turned on, but now all I see is a black image, and that's it. I tried putting the old HDD back in, but nothing changed. The same thing happened in safe mode. I also tried cleaning the HDMI cord, using different TVs and displays, and using a different HDMI cable, all with no success. Does anybody know why this is happening? Maybe my APU is dead?

Edit: i should have clarified this before but it does actually seem to enter safe mode because the light turns white.

⟐ Commented April 16, 2026 at 4:02 MST

Olympus VR-350: Why is my camera screen like blocked out by large white blocks

Thu, 16 Apr 2026 03:52:44 -0700

I turn on my camera and the screen is like blocked and glitchy. It still can take photos and everything else is fine. How do I fix this? Do I need to change the screen?

⟐ Edited by author April 16, 2026 at 3:52 MST

Kicker CXA300.1: This amplifier are not connected with bluetooth

Thu, 16 Apr 2026 03:42:24 -0700

This amplifier are not connected with bluetooth

After damage

Xiaomi Redmi Pad SE 11: How to replace a defective charging port?

Thu, 16 Apr 2026 03:27:31 -0700

My son's tablet stopped charging. I could narrow down the problem to a defective charging port: Maybe the solder pads have gone loose.
How to dissect the tablet and replace the charging port?

Thanks in advance!

⟐ Commented April 16, 2026 at 3:27 MST