power supply

Hey all, the topic of Macs and UPS systems have been discussed many times in different threads here. However, I haven't been able to find a current thread containing my exact issues and concerns so thought I would start a new thread. I have been having very frustrating issues over the last...

Hi everyone, Has the time come to say bb to my Magsafe 2? After I connect it after 1-10-hr breaks, the indicator won’t show any lights for 10-70 seconds. After I connected my rMBP to another Magsafe at a shop, the shop’s indicator switched on immediately. So did my old adaptor when I...

Hello, I have read several messages about this, but I found no clear answer. My iMac 2017 5K high end configuration with pure ssd, since day 1 has an electric noise every time something is moving on the screen. This is only audible when my room is silent and i place my ear near the iMac. It...

Mac problems #iWoe Having some Mac troubles today. When I press the power button on my Mac Pro I hear a click but the computer doesn’t turn on, no fan, nothing. I reset the SMC memory and replaced the internal PRAM back up battery which worked before but not this time. Pressing the diagnostic...

I have a dual core early 2009 Mac pro.. I was working just fine till one day it just died over me. After tons of research I figured it was the PSU as the diagnostic LEDs were dead aswell so I gave the PSU to this mechanic I knew and he sort of fixed the issue (I Think) cause after the repair the...

Hi all! I home this is the right place to post this. I got a working iMac G3 recently out of a recycling bin for free recently and it worked! at least for a while. After a few boots the power supply blew and it stopped working. I've taken it apart and found a blown ceramic capacitor. I would...

I’ve got a 1080Ti (and a 980) added to my Mac Pro (4,1 upgraded 5690 CPUs to 5,1) using an external 750W power supply and it's working and now I think I need a SWEX so that I don’t have to turn on the power supply every time, and always have to shut down my Mac when I'm not using it for an...

Hi everybody, as a long time avid reader - I decided to start my first thread. I have been looking far and wide (all around Germany) to find a solution to power my new RX 580 8GB in my 4.1 -> 5.1 Mac Pro. I am well aware that there are cables offered on amazon.com - on websites based in the...

Hello all, I've received a 2013 model MacBook Air that does not power on or respond to anything. The story I was told was that the previous owner was using an Arduino connected directly to one of the USB ports and somewhere along the line they (The MacBook Air & Arduino) both died. I assume...

I just picked up a 17 inch iMac G4 cheap on Craigslist, model number M6498. It doesn't work, and from what I've been seeing, the problem is most likely to be the Power Supply. When the power button is pushed, nothing happens at all, not even the fan spins up. Is this the power supply or could it...

Hey everyone I’m looking for some answers about the official usb-c power supply compability and hope someone can try it out of has something to say about it. I switched to a retina 12inch MB and an iPad mini I bought used. After getting the usb-c to lightning cable I just kept charging...

common problem, iMac just quit while uploading huge files. All power just stopped. Read every forum, did all the tricks, cables removed, pushed all the buttons, nothing. Mid 2011 iMac. Replacing the power supply looks easy enough, recommendations? Afraid to buy expensive power supply and...

I just picked up a dual 1.25 MDD for free from a friend who had it sitting in their basement, last used in 2010. I brought it home and tried starting it, but the power button lights up, then dies. Based on some googling, this seems to be a sign of a dead PSU, which seems fairly common on these...

I have a 2017 mac book pro and I am using the power supply that it came with. Tonight I noticed instead of a beep when I plugged the power supply in I got a loud, screeching sound that sounds electrical or static like. The computer is still charging but am wondering if this is an issue anyone...

Hi guys! I'm new here so thanks for having me. Let me start off by saying I am a computer repair technician. Never had a problem working on Mac computers. If anything everything is easy to get to and laid out nice and neat. A customer brought me a iMac 27" 2015 i5 (I believe an A1419) that...

I have a SQUID with 3 Kingston HyperX Predators in the x16 slot of my 2009 cMP. Two of the three Predators failed back to back, 1 day apart. I get the message to initialize and when I do Disk Utility opens up and the drive shows up greyed out, spinning, and never initializing. Rebooting brings...

The Mac Pro 4,1 & 5,1 have plenty of PCIe AUX power, unless you need more than 300 watts for your GPU(s). Remember you get 75 watts from the PCIe slot. Each PCIe AUX 6 pin connector in the Mac Pro towers delivers 150 watts. Yes all three power pins in both of the PCIe AUX plugs are connected...

Can I put this card: http://a.co/4oULUfx into this computer: http://bit.ly/1yJ7Oel using these cables: http://ebay.to/2kvxN3w Sapphire HD 7970 has two 8-pin connections. The MacPro has two mini 6-pin connections. I see wires that have mini 6-pin on one end, and 8-pin on the other. I just...

Hi all, I have Mac Pro Late 2013 D300, shipped with Mavericks 10.9.5 and works fine without any problem for 2 years (i'm buying it at early 2015). Two weeks ago, I update to El Capitan 10.11.5, the problem is it can not turn on after shutdown. Press power button, its dead, and only turn motion...

hello, i recently bought an external usb 2 IDE/SATA adapter to mount my working ok, maxtor diamondmax 10 hard drive on my PPC G5. the power supply unit of adapter states OUTPUT 5, 12V @ 2A. INPUT 0.8A. HDD states +5, 12V @ 1.5A I plugged it in, power green led works on the power supply unit...