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Dell XPS 13 7390 Laptop - Complete Disassembly & Upgrade Guide: SSD, Battery, LCD & Motherboard Replacement

Jun 29, 2025

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1. Dell XPS 13 7390 Pre-Disassembly: Value Assessment & Preparation

1. Component Valuation Guide

Part Condition Price Range XPS Premium
512GB NVMe SSD Used, tested $50-$80 +25%
Original Battery <300 cycles $80-$120 +30%
4K Touch Display No dead pixels $150-$250 +40%

2. Resale Documentation

  1. Performance Records:
    • Run Dell SupportAssist diagnostics
    • Capture battery health (F12 at startup)
  2. Visual Documentation:
    • Photograph Service Tag and Express Service Code
    • Record Dell part numbers (e.g. 0T7D6C)

3. Essential Tools

  • Basic Tools:
    • T5 Torx screwdriver (iFixit set)
    • Plastic spudger (0.6mm)
  • Specialty Items:
    • ESD-safe workspace
    • Suction cup for display removal

4. Warranty Verification

5. Safety Precautions

  1. Power down and unplug charger
  2. Discharge residual power (hold power button 20 sec)
  3. Use anti-static wrist strap

2. Dell XPS 13 7390 Bottom Cover Removal: Safe Access for Upgrades

1. Precision Screw Removal

  1. Locate All Fasteners:
    • 8 proprietary Torx T5 screws (different lengths)
    • Use magnetic mat to organize screws by position
  2. Proper Technique:
    • Apply firm downward pressure (0.6 Nm torque)
    • XPS-specific: Counter-clockwise turns only

2. Hidden Clip Locations

Area Release Method Tool
Front Edge Insert at 25° angle near touchpad 0.6mm plastic spudger
Rear Edge Lift upwards first, then slide forward iFixit opening picks

3. Safe Cover Separation

  • Initial Break:
    • Start near front-right corner (XPS weak point)
    • Use suction cup for initial 2mm lift
  • Full Removal:
    • Maintain 30° angle during separation
    • Watch for fingerprint reader cable (center-top)

4. Preserving Resale Value

  • No-Scratch Technique:
    • Plastic tools only (metal voids Dell warranty)
    • Damaged covers reduce value by 30-40% on XPS models
  • Reassembly Prep:
    • Photograph screw positions (different lengths)
    • Note clip engagement points

Common XPS-Specific Issues

Problem Solution Resale Impact
Stuck adhesive Apply 99% isopropyl with dental floss Prevents case warping
Stripped screw Use rubber band for grip Avoids service marks

0:25 Bottom Case 1:53 Battery 4:00 Motherboard 5:50 Heatsink Cooling Fan Assembly 7:57 WiFi Card 8:15 Speakers 9:19 Hinges 9:53 Keyboard 9:58 Touchpad 10:05 Palmrest Assembly 10:12 Display Assembly

3. Dell XPS 13 7390 SSD Upgrade: Storage Solutions & Resale Value

SSD Specifications

Slot Type Form Factor Interface Max Capacity Speed
Primary M.2 2280 NVMe PCIe 3.0 x4 2TB 3500MB/s

SSD Replacement Process

  1. Access SSD Bay:
    • Remove single M2x3 screw (marked with SSD icon)
    • Note thermal pad orientation
  2. Module Replacement:
    • Insert new SSD at 30° angle (gold contacts first)
    • Secure with 0.6 Nm torque
    • Reapply thermal pad for optimal cooling

Performance Comparison

  • XPS-Optimized Speeds:
    • Sequential Read: Up to 3400MB/s
    • Sequential Write: Up to 3000MB/s
  • Real-World Benefits:
    • Windows boot time: Under 7 seconds
    • Application launches: 2x faster than SATA

Current Resale Values (Q3 2024)

Capacity Used OEM New Retail XPS Premium
256GB NVMe $40-$60 $70-$100 +30%
512GB NVMe $60-$90 $110-$150 +35%
1TB NVMe $100-$160 $180-$240 +40%

Maximizing Resale Value

  1. Data Sanitization:
    • Perform secure erase in Dell BIOS
    • Include certificate of data wipe
  2. Health Documentation:
    • Show TBW under 50% rating
    • Document power-on hours under 5,000

Buyer Compatibility Notes

  • Works with XPS 13 7390/7391 models only
  • Not compatible with PCIe 4.0/5.0 drives
  • Requires Dell-approved thermal solution

4. Dell XPS 13 7390 Battery Replacement & Resale Guide

Battery Specifications

Model Capacity Voltage Part Number Cycle Life
Standard 51Wh 11.4V 0T7D6C 500 cycles

Safe Battery Removal Process

  1. Power Down Safely:
    • Shut down completely
    • Hold power button for 15 seconds
  2. Disconnect Battery:
    • Locate 3-pin connector (center-left)
    • Use plastic spudger to release latch
  3. Remove Battery:
    • Unscrew 4x T5 screws (marked with battery icon)
    • Lift from bottom edge first

Current Resale Values (Q3 2024)

Condition 51Wh Battery XPS Premium
New OEM $100-$140 +35%
<200 cycles $80-$110 +25%
<400 cycles $60-$90 +15%

Maximizing Resale Value

  1. Health Documentation:
    • Generate battery health report via powercfg
    • Show cycle count under 300
    • Include Dell Power Manager screenshots
  2. Physical Preparation:
    • Clean contacts with isopropyl alcohol
    • Measure thickness (should be <7.8mm)

Shipping Best Practices

  • Discharge to 30-50% charge level
  • Use original protective packaging
  • Include UN3481 lithium battery labels

Buyer Compatibility Notes

  • Fits XPS 13 7390/7391 models only
  • Not compatible with newer XPS 13 designs
  • Requires Dell-specific power calibration

5. Dell XPS 13 7390 LCD Replacement: Panel Options & Resale Value

Display Specifications

Model Resolution Panel Type Part Number Touch Support
Standard 1920×1080 IPS 0T7D6C No
Premium 3840×2160 IPS Touch 0K5Y7J Yes

Screen Replacement Process

  1. Bezel Removal:
    • Use plastic pry tools starting at bottom edge
    • Release 12 clips (6 top, 6 bottom)
    • Note adhesive strip locations
  2. Display Disconnection:
    • Release 40-pin eDP connector latch
    • Remove webcam/mic cables carefully
  3. New Panel Installation:
    • Align with mounting holes (4x M2.5 screws)
    • Torque to 0.4 Nm (Dell specification)

Current Market Values (Q3 2024)

Panel Type Used/Tested New OEM XPS Premium
FHD IPS $120-$180 $250-$350 +25%
4K Touch $250-$350 $450-$600 +40%

Selling Your Old Screen

  • Condition Documentation:
    • Photograph with solid color test patterns
    • Note any dead pixels or backlight bleed
    • Include Dell panel ID sticker photos
  • Packaging:
    • Use original protective foam spacers
    • Double-box with 2" minimum padding

Common XPS-Specific Issues

Symptom Solution Resale Impact
Flickering Reseat eDP cable No value loss if fixed
3-5 dead pixels Sell as "B-grade" 30% reduction

6. Dell XPS 13 7390 Motherboard: Resale Valuation & Market Demand

Motherboard Specifications

Model Chipset CPU Support Part Number Production Years
Standard Intel WM390 10th Gen Core i5/i7 0T7D6C 2019-2021

Current Resale Values (Q3 2024)

Condition i5-10210U i7-10510U Parts Only
Fully Functional $200-$280 $250-$350 -
Minor Issues $150-$200 $180-$250 $100-$150
For Components $80-$150 $100-$180 $60-$120

Maximizing Resale Value

  1. Documentation:
    • Photograph all Dell service tags and barcodes
    • Include BIOS version screenshots
    • Show CPU stress test results
  2. Presentation:
    • Clean with 99% isopropyl alcohol
    • Remove all thermal paste residue
    • Package in anti-static bag with foam supports

Target Buyer Markets

  • Corporate Refurbishers:
    • Pay 25-35% premium for Dell-certified boards
    • Require complete service history
  • IT Repair Shops:
    • Seek boards with known-good components
    • Value partial functionality

Compatibility Notes

  • Works with XPS 13 7390 only
  • Requires matching generation CPU/RAM
  • Not compatible with XPS 13 2-in-1 models

7. Where to Sell Dell XPS 13 7390 Parts for Maximum Profit

Best Marketplaces for XPS Components

  • SellBroke:
    • Specializes in premium laptop part-outs
    • XPS-specific buyer network
    • Average 22% higher prices for Dell components
  • SellLaptopBack:
    • Instant quotes for functional parts
    • Pre-paid shipping labels included
    • Best for quick liquidation
  • Government Surplus (GSA Advantage):
  • Education Marketplaces (E&I Cooperative):
    • Preferred by universities and schools
    • Requires asset tags and service history
    • Seasonal demand peaks (May-August)

Selling to Government & Education Buyers

  1. Documentation Requirements:
  2. Pricing Strategies:
    • List at 15-20% above market for GSA
    • Offer educational discounts (5-10%)
    • Bundle compatible components

Optimizing Your Listings

Platform Title Formula Key Words
eBay "Dell XPS 13 7390 [Part] [PN] Tested Working" OEM, Pulled, Verified
SellBroke "Dell XPS 7390 [Condition] [Part] - [Specs]" Genuine, Refurb, Grade A
.gov "Dell XPS 13 7390 [NSN if available] [Part#]" GSA, FSC, ITAR

When to Sell for Maximum Profit

  • Corporate Buyers: January-March (budget cycles)
  • Schools/Universities: May-July (summer upgrades)
  • Government Agencies: September (fiscal year-end)

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