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Display & Backlight Failures

When a phone or computer suffers from a blank screen, flickering display, or a failing backlight, standard part replacements often aren't enough. CaseMogul specializes in advanced diagnostics and repairs that tackle both simple screen issues and deep circuit-level damage.

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Common Phone Display and Backlight Failure

What to Do If Your Phone's Camera or Sensors Stop Working

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iPhone screen black but it vibrates

When your device experiences severe Display & Backlight Failures—such as a black screen that vibrates, a half-dark display, or lines with unresponsive touch—standard parts replacement isn't always enough. These issues often point to damaged micro-components or motherboard circuit failures. CaseMogul offers fast, reliable diagnostic and repair services for both phones and computers to tackle these advanced technical issues. Schedule a free diagnostic test to find the exact source of the problem and get your device back up and running.

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iPhone screen very dim

If your iPhone screen is so dark that you can only see a faint image when shining a flashlight directly on it, the issue is typically a failed backlight driver or blown filters. Rather than a standard screen replacement, this requires professional diagnosis to repair the root cause of the power failure. CaseMogul offers fast, reliable diagnostic and repair services for both phones and computers to resolve complex motherboard issues and get your device back up and running.

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Lines on iPhone screen

The sudden appearance of colored or white lines on your iPhone screen is a major sign that the internal driver circuitry or the OLED/LCD panel has failed. This frustrating issue can prevent the touchscreen from responding correctly to your touch. CaseMogul offers fast, reliable diagnostic and repair services for both phones and computers to pinpoint whether you need a quick screen replacement or a deeper hardware fix, getting your device back up and running.

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Touchscreen not responding

When an unresponsive touchscreen prevents you from swiping or unlocking your device, the problem is often caused by physical damage to the internal digitizer or a disconnected cable. This frustrating issue can occur due to accidental drops, heavy pressure, or software glitches. CaseMogul offers fast, reliable diagnostic and repair services for both phones and computers to accurately identify the underlying cause and get your device back up and running.

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Backlight circuit repair

When a device suffers from a severe failure in its display lighting, a standard screen replacement is rarely enough. These issues are usually caused by microscopic damage directly on the motherboard’s backlight circuit, often triggered by liquid exposure or an internal electrical short. CaseMogul offers fast, reliable diagnostic and repair services for both phones and computers to accurately isolate and resolve complex micro-soldering issues and get your device back up and running.

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Touch IC disease fix

When your screen stops responding to touch or shows a flickering gray bar at the top, the issue is often caused by Touch IC disease. This mechanical problem happens when the logic board's touch control chip becomes detached from its internal electrical traces due to accidental drops or bending over time. CaseMogul offers fast, reliable diagnostic and repair services for both phones and computers to securely re-solder the chip and get your device back up and running.

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Display FPC connector replacement

When the delicate interface that connects your screen to the motherboard gets damaged, bent, or burnt, your device will experience total display and touch failure. This critical issue typically occurs during a DIY screen replacement attempt, after a heavy drop, or due to liquid corrosion. CaseMogul offers fast, reliable diagnostic and repair services for both phones and computers to safely micro-solder a new connector onto the board and get your device back up and running.

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Motherboard backlight filter repair

When a device's display goes completely dark after a screen replacement or an internal short-circuit, the problem is often a blown motherboard backlight filter. This delicate component acts as a fuse, and it can burn out instantly if the battery remains connected while the screen is being serviced. CaseMogul offers fast, reliable diagnostic and repair services for both phones and computers to safely micro-solder a new filter onto the logic board and get your device back up and running.


Repair FAQ

Frequently Asked Questions

Are there any upfront fees +

No, we do not charge a fee to diagnose your phone. We'll always do a free diagnostic for your device and confirm cost and timing with you before proceeding. There is never any obligation to repair your phone.

How long will it take to repair +

repair times depend on type of repair as well as availability of parts. While we stock most replacement parts, sometimes they are backordered or a specialty item. Phone repairs can range from 1-hour to a few days. We also have an online portal that you can use to track your phone's repair progress. Book a no-obligation quote to find out more.

What is your Warranty on repairs? +

Peace of Mind: Bring your phone back for any parts or labor related issues and we will fix it at no additional cost. Our Certified Repairs are backed by an industry-leading Limited Lifetime Warranty, so you can have peace of mind.

‡Limited Lifetime Warranty applies to select repairs made solely by CaseMogul only. CaseMogul has the right to refuse any warranty claim due to, but not limited to customer action or inaction. The Limited Lifetime Warranty waives select repair costs only and does not include shipping to CaseMogul locations, or any other additional costs. Battery repairs, charging port repairs, and iPhone motherboard repairs carry a 90-day repair warranty. Conditions and terms may change without notice.

Can I trust your repair techs ? +

We have more certifications and can fix more issues on more devices than other repair shops. We are a globally certified repair shop and have been in business for over 10 years. Our staff and techs go through training and ensure privacy, accuracy and quality in every repair.

Will I ever be charged more than I was quoted? +

No, we will always give you a call ahead of time to get a confirmation before we proceed with any additional work.

Repair Capabilities

In-Store Experience

Repair Experts

Count on Us

Advanced Motherboard Repair

Advanced Motherboard Repair


Most repair centers stop at minor repairs. At CaseMogul, our certified technicians are trained in BGA CPU replacement, microsoldering, and fine-pitch component repair.

When others say it’s beyond repair, we go beyond!

Expect the Best Phone Repair Experience

Expect the Best Phone Repair Experience


Here's what to expect when coming to CaseMogul. Every CaseMogul has a similar layout for an easy shopping experience so everyone can conveniently find what they’re looking for.

Take a quick tour to see what you can expect at any of our locations!

See Why We Are The Experts

See Why We Are The Experts


At CaseMogul, we know your phone is more than just a device—it’s your connection to the people and moments that matter most.

We thrive on helping you with anything and everything to stay connected to what truly matters.

From phone protection, phone repair, and any and every phone inquiry we’re always happy to help!

Trust is Important

Trust is Important


For over 10 years, CaseMogul has been your leading brand for phone accessories and repairs. With over 16 locations and counting in Alberta and British Columbia, we are here to help keep you on what is truly important, staying connected and making memories.

From our products, repairs, and warranties, we show you why many of our customers trust CaseMogul.

We'll repair your phone when others can't.

We're a globally certified team with an industry leading warranty. We'll repair your phone faster and for less than you think.

We'll repair your phone when others can't.

We're a globally certified team with an industry leading warranty. We'll repair your phone faster and for less than you think.

No problem goes undiagnosed at CaseMogul. We can fix smartphones, tablets, laptops, gaming consoles and other electronic devices. There's a reason why other repair shops come to us in a pinch.

BOOK A REPAIR Hand Image

What People Are Saying About Us

4.9 ⭐⭐⭐⭐⭐ (8,875 reviews) Combined Average Google Rating For All Locations


Mail-In Repairs

Send us your device and we will fix it and return it to you in 5-10 business days. Our technicians typically do same-day repairs. Then your device will be tested, sanitized and couriered back to you. Remember to back up your phone data before you send it in. 

Step 1: Contact us for a quote

Step 2: Ship your device according to our shipping instructions

Step 3: We send your device back with a tracking number

MAIL-IN A REPAIR