This Gaming Laptop DESTROYED Itself -- To SAVE Itself

Product Reviewed

• Dell G15 5515 (Ryzen Edition) gaming laptop Brought in for repair after a failure caused by:

  • Burning smell
  • Black screen
  • No power

Main Problem & Symptoms (What Went Wrong)

• The customer reported a burning smell followed by the laptop going black and not powering on.
• When attempting to power it, the Dell DC adapter immediately entered protection mode.
• Using a Dell AC power meter / DC jack setup, the repairer concluded the behavior pointed to an internal short on the motherboard power circuit rather than a completely dead charger.

Key Repair Findings (What the Video Claims Caused It)

• The burnt components were MOSFETs in the laptop’s main power input/protection circuit.
• One burnt MOSFET was described as:
  • Exploded/welded to the board due to extreme heat
  • Part of a circuit that protects the board by shutting down current when a short is detected
• After removing the burnt MOSFET, a short remained elsewhere in the main power rail path.
• Further probing and a thermal camera “voltage injection” method identified additional MOSFET(s) shorted to ground.
  • Some of these failures behaved like part of the protection circuit.
• Later, after the laptop was mostly working, plugging in the charger caused another shutdown:
  • The charger shut off again due to another charging-circuit MOSFET short.
  • Removing the battery allowed operation on battery power.
  • Adding the battery and charger caused current draw to spike and then shut down.

Features / Parts Involved (As Described)

Components visible during teardown

• Genuine Dell battery
• M.2 storage (mentioned as 2280 full size, plus another drive)
• RAM sticks
• Wi-Fi card
• Dual fans
• NVIDIA GPU (exact model not specified; later mentioned as paired with a 3060)
• Ryzen 7 CPU

Power/charging system elements discussed

• DC jack
• MOSFET pairs / protection MOSFETs on:
  • the main power rail
  • the battery charging circuit
• Current sense resistor
• Charging IC/coil path (described conceptually)
• Thermal camera used to locate the short during injection testing

Repair Process / User Experience (What the Repairer Did)

1. Confirmed the short by observing the adapter go into protection mode.
2. Opened the laptop and inspected for damage:
   • Found obvious burnt MOSFET(s)
   • Mentioned cracking near the speaker area
   • Evidence suggesting prior opening (non-original screw mix / screw handling)
3. Removed the burnt MOSFET using hot air and flux:
   • Said it came off in one piece, but lifted pads slightly
4. Performed continuity checks to verify the main short was temporarily removed.
5. Used thermal camera + voltage injection (“short killer”) to identify which component heated under low-voltage injection.
6. Replaced multiple MOSFETs:
   • Main input/protection MOSFET(s)
   • Charging-circuit MOSFET(s)
7. Replaced the DC jack:
   • Due to visible melting and edge breakage
8. Verified battery charging behavior:
   • Battery initially showed 100% in BIOS/diagnostics
   • Later charging behavior increased into expected range
9. Ran stress tests and performance checks.
10. Repeated board pulls and MOSFET replacement when new shorts appeared after earlier fixes.

Performance Outcomes Mentioned (After Successful Repair)

• With the 3060 running under stress tests:
  • ~102 FPS while plugged in
  • ~26 FPS while unplugged
• Early on, the charger shut off during attempts, but after final parts replacement:
  • Charger/current draw values were consistent enough to run the GPU stress test.

Comparisons

• No direct comparisons were made to other brands/models.
• Only conceptual discussion, including:
  • Gaming laptops often have thicker boards
  • MOSFETs can fail in protection/fuse-like behavior
  • The DC jack and MOSFET protection scheme are intended to protect the motherboard and charger

Pros (Implied Positives About the Repair Outcome)

• The laptop was successfully repaired after multiple diagnostic cycles.
• Verified results included:
  • Boot to Dell screen
  • Diagnostics
  • Battery charging behavior
  • GPU stress test performance
• The charger no longer immediately trips protection after the final parts replacement.

Cons / Downsides Mentioned

• Extensive damage required:
  • Multiple MOSFET replacements
  • Multiple motherboard removals
• DC jack was melted/broken and required replacement.
• Risk emphasis:
  • Fixing one burnt MOSFET doesn’t guarantee the true root cause is gone.
• Possible prior tampering:
  • Incorrect screw types and screw evidence suggests the laptop may have been opened previously.

Unique Points Mentioned About the Product (Distinct Claims)

• Dell G15 5515 Ryzen edition uses a 7.4mm Dell DC jack.
• The AC adapter enters protection mode when the short is present.
• Burnt MOSFETs were part of:
  • Main power protection/current-sense path
  • Charging circuit / battery-charge MOSFET path
• At least one burnt MOSFET was welded/exploded and required careful hot-air removal.
• Additional protection MOSFETs could:
  • Short to ground
  • Cause secondary downstream failures
• Used thermal camera + voltage injection to locate shorted components.
• After repair:
  • The laptop showed the Dell screen and booted
  • Battery showed 100% initially in BIOS/diagnostics
  • Charging current rose properly during charging tests
• Final performance after repair:
  • ~102 FPS plugged-in, ~26 FPS unplugged with the 3060
• The DC jack had melting and was replaced with Dell OEM/stock jacks for the Ryzen edition.
• Noted speaker-side bottom crack and signs of prior disassembly.

Final Verdict / Recommendation

• Recommended repair approach: This is not a simple “replace the obvious burnt part” case. The fault is described as propagating, requiring:

  • Systematic tracing
  • Often multiple MOSFET replacements
  • DC jack replacement

  • Overall outcome: The laptop was restored to working condition, confirmed by:

  • Boot

  • Charging functionality
  • Stress/performance verification