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Louis Rossmann’s rants, tips, and ideas on the laptop repair industry.
Rossmann Group's Recommended Tool List

Microscope - http://www.amazon.com/AmScope-SM-4B-...oom+microscope
Microscope light http://www.amazon.com/AmScope-LED-14...scope+ring+led
Hot air station- Quick 861DW: https://store.rossmanngroup.com/index.php/quick-861dw.html

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Fixing a 2012 Retina MacBook Pro with no power

What is the issue? This customer sent in their MacBook to our store in New York City for our logic board repair service because it has no power. What was causing the issue? The first step to diagnosing a MacBook is to go through all the power rails required for the machine to turn on. […]

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Fixing a MacBook that has no backlight because of a bad coil

What is the issue? This customer sent in their MacBook to our store in New York City for our logic board repair service because it has no backlight. What was causing the issue? The first step to finding the cause of a backlight issue is figuring out what type of failure is causing there to […]

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Fixing Yet Another MacBook Air with No Backlight.

What is the issue? This customer sent in their MacBook Air to our store in New York City for our logic board repair service because it had no backlight. What was causing the issue? The first thing we have to check on any MacBook that has no backlight is the Backlight fuse. While the fuse […]

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Fixing a MacBook Pro with no power

What is the issue? This customer sent in their MacBook Pro to our store in New York City for our logic board repair service because the machine would not turn on. What was causing the issue? We start off by seeing that there is no green light on the charger. Next, we measure the power […]

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Fixing a MacBook Pro with a bad SMC

What is the issue? This customer sent in their MacBook Pro to our store in New York City for our logic board repair service because the machine would not turn on. What was causing the issue? We start off diagnosing this machine by looking at the power rails that need to be present for the […]

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Why do 2012 15" Retina MacBook Pros with a dGPU die?

What are the symptoms of this common issue? This issue is present on Late 2012/Early 2013 model 15" MacBook Pros that have a GT650M Graphics card. The issue can present itself in several different ways, including sudden shutdowns, kernel panicking, black screening, or just no image on the screen. What causes this issue? This is […]

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Fixing a Retina MacBook Pro that doesn't turn on

What's wrong with this MacBook? This MacBook was sent to us for our MacBook Logic Board Repair Service in Austin because it didn't turn on. How can we fix the issue? Initial diagnosis First, we start off by observing that it pulls 200mA from the charger. This indicates that it has either a short on […]

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Why does this A1398 MacBook Pro have no Backlight?

What's Wrong With This MacBook? This customer sent in their MacBook Pro to our store in New York City for our logic board repair service because it has no backlight on the screen. It appears to have some liquid damage. How can we fix the issue? Initial Diagnosis The first thing we do with this […]

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