Samsung Galaxy Tab S9 Ultra Broken Screen? Learn How to Replace It!

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OVERVIEW:

In this blog, we cover the full screen replacement process for the Samsung Galaxy Tab S9 Ultra. This premium tablet came in with a faulty LCD that showed no display or touch response but was still making sounds. Our goal is to replace the damaged display panel using only safe tools and OEM parts. Due to the tablet’s size and thin bezel, extra care is needed during disassembly. Follow this comprehensive teardown to restore your device with precision and confidence.

See the official Samsung specs for this model

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REPAIR TIME & SKILL LEVEL:

This repair is estimated to take about 1 to 2 hours to complete and is of ADVANCED difficulty, requiring precise handling of adhesive, fragile components, and flex cables.

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STEPS:

Tools You Need

For this repair, you will need a heat gun, a preheat mat set to 90°F, a suction cup holder, B7000 glue adhesive, a plastic card for safe glass removal, isopropyl alcohol (99% proof), and double-sided 3M tape.

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Prepare the Heat Mat

• Set your heat mat to 90°F, no higher.
• Because the tablet is 14 inches and the mat is smaller (around 12.9”), alternate the device’s position.
• Let the tablet warm up for a full 10 minutes to properly soften the adhesive under the screen.

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Apply Isopropyl Alcohol to the Edges

• After heating, flip the tablet and begin applying 99% isopropyl alcohol around the screen’s perimeter.
• Focus on the corners to help loosen adhesive and make separation easier.
• Allow a few seconds for the alcohol to seep in and break down glue layers.

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Use the Suction Cup to Begin Lifting

• Attach the suction cup holder to one side of the screen—preferably a corner where lifting is easier.
• Pull gently to create a small gap between the display and the frame.
• Avoid pulling too hard to prevent flexing or cracking the glass.

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Insert the Plastic Card

• Once a small opening forms, slide the plastic card into the gap created.
• Work slowly and keep the card shallow to avoid hitting internal components.
• Begin cutting through the adhesive along the edges using controlled motion.

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Navigate Thin Bezel Areas Carefully

• The LCD panel sits extremely close to the bezel on this device.
• Stretch your hand slightly while maneuvering the card to stay beneath the adhesive.
• Never insert the card too deep—this could cause damage or lines on the LCD.

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Work Around Steel Island Tape

• Underneath the screen are strips of steel “Island tape” that hold the LCD in place.
• Use the plastic card to slowly pry beneath these strips without pulling too fast.
• Any friction or abrupt movement could permanently damage the screen.

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Fully Detach the LCD Panel

• Once all adhesive and tape have been loosened, gently lift the screen free from the frame.
• The panel should come off cleanly if the edges were fully separated.
• Be cautious not to tug on the main flex cable connecting the screen to the motherboard.

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Disconnect the Main Flex Cable

• Locate the flex cable linking the LCD to the motherboard.
• Disconnect it carefully by lifting the latch or removing the connector.
• Set the broken LCD panel aside in a safe location.

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Examine the Internal Layout

• The Galaxy Tab S9 Ultra includes a large 11,200mAh battery and four high-performance speakers.
• Only the LCD needs to be replaced; no other internal parts require removal.
• Note that this tablet also includes a daughterboard near the lower connectors.

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Remove the Old Adhesive Strips

• Remove all old Island tape from the four edges of the display housing.
• Clean the surface thoroughly to ensure the new adhesive will bond securely.
• Samsung recommends always replacing adhesive when reassembling.

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Apply Fresh Adhesive

• Use U 3M double-sided tape or OEM Samsung Island tape (available on our website).
• Apply new tape to the four designated areas previously covered with adhesive.
• Ensure it’s aligned evenly to avoid screen lift or misfit issues.

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Prepare the New LCD

• Take your OEM replacement screen and inspect it for dust or defects.
• Make sure the flex cables are aligned properly before installing.
• Handle the screen from the sides to avoid leaving fingerprints on the digitizer.

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Apply B7000 Glue

• Add a thin, even layer of B7000 glue around the entire frame’s edge.
• Be sure not to overapply, as excess glue can seep into internal components.
• This adhesive will help restore water and dust resistance.

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Install and Align the New Display

• Connect the flex cable of the new LCD to the motherboard securely.
• Lower the display gently into the frame and align it with the corners.
• Press lightly around all edges to ensure an even, sealed fit.

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Inspect for Dust and Gaps

• Before finalizing the seal, check all edges for dust or debris that could prevent proper contact.
• Re-seat the screen if needed until it is perfectly flush with the housing.
• Let the adhesive cure for several minutes before powering on.

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Power On and Test the Tablet

• Turn on the Galaxy Tab S9 Ultra and check the screen’s display and touch responsiveness.
• Verify that the digitizer and LCD are functioning as expected.
• If everything looks good, the repair is complete!

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CONCLUSION:

The Galaxy Tab S9 Ultra is one of the largest and most premium tablets available, which makes screen replacement a high-stakes task. With its thin bezel and massive 14-inch LCD, using plastic tools and precise technique is essential. Always take your time during disassembly and ensure proper alignment during reassembly. With the right tools, OEM parts, and a steady hand, your device will be back to working like new.

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VIDEO TUTORIAL:

Looking for a more in-depth tutorial? Check out our complete teardown video for a detailed step-by-step walkthrough.

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MAIL-IN REPAIR SERVICE

We offer professional screen replacement services. If you’re unsure about doing this repair yourself, send your device to our expert technicians for fast and reliable repair.

https://tekdep.com/device-repair/

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SHOP PARTS:

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SHOP TOOLS:

Using precision tools ensures a safe and efficient repair. Always use the right tools to prevent damage to delicate components.

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HAVE QUESTIONS?

If you have any questions, leave them in the comments below. Our community and team will be happy to help! We’re here to help! Contact us: 

• Phone: 818-456-4479
• Email: support@tekdep.com

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