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CMIzapper  Technology for your Mac repair business

CMIzapper Medusa

The Medusa is our line of tools to play with the EFI ROM. The tool you need when repairing boards and you want to see the serial number or the firmware version without putting the board in a Mac or when you forgot your EFI PIN and locked yourself out of your Mac.

It is incredibly easy to use. The built in LCD display will show you what is going on.

1) Display info from the EFI ROM:

ROM chip model, ROM chip size, Mac Firmware version, ME version, EFI lock state, Mac serial Number, production date and time... and many many more options!

Click on the link to learn more...

Matt Cards

The Matt Card is the alternative to swapping the EFI ROM chip on your motherboard. It plugs into a tiny connector on the motherboard. As long as the Matt Card is plugged in (it has to stay plugged in...) the ROM on the Matt Card will be the one that is used. Using the Matt Card is simple. Turn off the Mac, plug in the card, turn on the Mac.

We have many kinds to cater for most models of MacBook Pro retina, MacBook A1534, Mac mini and MacBook Air.

Magsafe charger tester

The CMIzapper MagSafe Tester is a small tool for the repair workshop. It is especially useful to show the customer that their crappy charger is in fact a crappy charger...

You can connect any MagSafe (1 or 2) power adapter to this tool.

This tester will show you if it is a real Apple or a fake Chinese adapter!

It will also show the output voltage both with and without load. A decent (read Apple) adapter will have a no-load output voltage of about 6 volts or less and will only turn on the full voltage of about 18 volts once it 'smells' that it is connected to a MacBook.

Chipmunk USB Tester

The big idea with this tester is that you plug it into any laptop or motherboard (Apple or Windows) you are repairing. With one second of extra work it will give you all sorts of extra information about what is going on with the device, and sometimes it will save you big-time. For example you will aware of when the board is powered so you will not plug or unplug the internal LCD cable by accident with the power still on. Also differentiating between a machine that turns on but shows no image and a machine that does not turn on becomes trivial.

This is a simple but extremely useful tool for anyone repairing computers and laptops. It has 3 lights showing power and USB activity, and it offers a versatile connection to the GND line of the computer.

Click on the link to learn more... also in USB-C

This is a simple but extremely useful tool for anyone repairing computers and laptops.

It has 3 lights showing power and USB activity.

The VBUS LED (red) is connected straight to the VBUS line and will light up whenever power is present. On USB-C ports it is the responsibility of the CD321x chip to turn the 5v on, this light implies that the the CD321x is at least partially working.

The USB LED (green) will blink whenever there is activity on the USB bus. As the USB bus on a computer is driven by the PCH, this will indicate that at least the PCH and probably also the CPU is running.

The 5volt LED (red) will only light up if the VBUS voltage is correct i.e. if it is below 4.75 volt it will be off. Above 5.4 volt it will blink to draw your attention to the danger that USB-C port would be to anything else you would plug in there.