The best professional repair resources to give you the competitive edge

High Sierra and Testing RAM 0

With macOS 10.13, otherwise known as High Sierra, Apple introduced an ambitious EFI update. Several of the changes include: the introduction of the Apple File System, support for NVMe drives, and the usual batch of security updates. However, these EFI updates can cause some unwanted behavior when you test your Apple computer’s memory. At Beetstech, we use a long-time industry standard, MemTest86 to perform a comprehensive test of each computer’s RAM.

But never the type to blindly accept test results, strange testing outcomes led us to discover a bug in MemTest86 affecting computers running the new EFI firmware. In short, the newly updated EFI causes MemTest86 to incorrectly fail certain tests. But there is good news: while normal operation of MemTest86 is limited under these new EFI updates, we also discovered some simple workarounds for testing your Apple’s memory in MemTest86.

So let’s dive into how we discovered the MemTest bug, devised a reliable work-around, and get into some nitty gritty details of MemTest86 operation.

MacBook Pro Unibody 2011 Graphics Defect 0

The era of the Unibody MacBook Pro proved to be one of the most popular product lines in Apple’s history. They remain popular for Apple consumers who don’t require the latest tech but enjoy the ability to perform hardware upgrades such as RAM and hard drive. While they can provide many years of service, select models from 2011 have a particular built in defect that can render your beloved MacBook Pro useless. In this post I’ll explore the defective Graphics Processing Unit (GPU) that affects many owners of the 2011 15″ & 17″ MacBook Pro. I’ll explain the problem and what can be done to resolve it.

Decode The Meaning Behind Your Apple Serial Number 16

The serial numbers of Apple products contain a codified language that can give you information about your Apple device that can’t be found through any other means—everything from the location where it was manufactured, the date it was manufactured, and much more. This information can be valuable for troubleshooting issues with your device or just for curiosity’s sake. So let’s get to breaking down their impenetrable code.

How to use the built-in Recovery Mode for macOS 0

There are lots of reasons why you might want to boot into Apple’s Recovery Mode. Maybe you’re seeing the dreaded flashing question mark when you booted your Mac. Maybe you’re preparing to sell your old MacBook (say, to a certain company that will give you a good price for it. Wink, wink) and you want to wipe your drive. Maybe you need a fresh start after upgrading your SSD. Whatever your reason, we’ll show you the steps to to start the built-in Recovery Mode and explain all that it’s capable of.

OEM MagSafe Chargers vs Cheap Imposters: Teardown for Truth 0

Anywhere premium products are produced, there are unsavory folks trying to make a quick buck selling cheap knockoffs. It happens in every industry, from clothes to food to tech. But in recent years, counterfeit electronics have surpassed nearly all other categories of counterfeit goods by dollar value, and Apple, being the de facto high-end electronics manufacturer, makes for a prime target.

But you’d never be caught buying counterfeit electronics, because you can tell the difference, can’t you?

The Ultimate Guide to Apple’s Proprietary SSDs 146

Remember the good ol’ days of carrying a spare battery, upgrading your own RAM, maybe even adding a second hard drive? If you’re an Apple user, those luxuries may be behind us, but upgrading your own solid state drive is still a privilege the Apple overlords allow us to have, for now that is.

Despite retaining the ability to upgrade your own SSD, ever since Apple introduced their proprietary “blade” SSDs in 2010, the task hasn’t been as simple as it once was. Apple talks up read and write speeds, but they rarely dive into the nitty gritty details of the technology behind the SSDs they use — drives specially designed only for Apple computers.

After countless questions, both from customers and our own staff, we decided to start our own investigation into the hardware involved. You have to be a bit of a private eye to uncover the secrets behind these drives, and the deeper we looked, the more surprises we found.

Your Hard Drive Cable Is A Ticking Time Bomb 12

Owners of a Unibody MacBook Pro laptop are probably already aware that failure of the hard drive flex cable is a common issue. While it affects just about the entire Unibody lineup, the Mid 2012 MacBook Pro 13″ (Model A1278) is especially prone to this type of failure.

What is it that makes the Mid 2012 release special in this regard? A design flaw in the flex cable that seems to be compounded by the properties of the aluminum housing.

Our repair services department noticed this issue when they’d replace a bad cable, only to have the customer return a few months later with another bad cable. And possibly again with yet another bad cable. It didn’t matter if we used a used cable or a new cable in the replacement. Customers kept returning with the same persistent issue. We had to figure out what was causing the issue and find a solution.

Articles for repair pros, by repair pros.

No spam. Unsubscribe at any time. Don’t worry, we hate bad emails too.