CPU 불량인데 부팅이 되는 기적?

복구천재 꼬마신발

26 Jan 202411:17

Summary

TLDRIn this video, the speaker narrates a frustrating experience with a Galaxy S21 Ultra water damage case that was mishandled, leading to a diagnosis of a 'CPU issue' without proper inspection. The circuit board shows signs of shorts and missing components, including MLCCs, indicating tampering rather than natural corrosion. The speaker meticulously investigates the circuit, revealing that the shorts were due to deliberate removal of components. Despite the challenges, the speaker attempts to repair the damage to recover data, highlighting the importance of expertise in handling such delicate cases. The video emphasizes the significance of honesty in repair assessments and the value of data backup, ending with a reminder to always back up data to avoid loss.

Takeaways

😡 The phone was intentionally damaged, not just water damaged.
😠 Many components were forcefully removed instead of corroded.
😠 MLCCs (capacitors) were torn off indicating a short circuit.
😠 The technician lied saying it was a CPU issue without proper inspection.
🔍 The problem was traced to the secondary power section.
🔍 The shorted part was located using a thermal camera.
🧐 Further disassembly showed the circuits were burnt from continued power.
🙂 The phone was revived by bypassing the damaged section.
😀 Data recovery is still possible if the core components work.
💡 Regular backups are critical as phone damage can happen anytime.

Q & A

What was the main issue with the Galaxy S21 Ultra mentioned in the video?
-The main issue was that the device had suffered water damage, leading to short circuits on the circuit board, and components like MLCCs were deliberately removed, making it falsely labeled as a CPU issue.
Why was the device incorrectly labeled as having a CPU issue?
-The device was mislabeled as having a CPU issue without proper inspection or removal of the CPU, which was misleading since the actual problem was related to short circuits and removed components on the circuit board.
What specific components were mentioned as being removed from the circuit board?
-MLCCs (Multi-layer Ceramic Capacitors) were specifically mentioned as being removed from the circuit board.
How did the technician attempt to diagnose the problem with the device?
-The technician used a tester to check for short circuits, inspected the device for removed components, and planned to use a DC power supply and a thermal camera to identify the exact problem areas.
What was the outcome of using the thermal camera to find the issue?
-The thermal camera did not show any overheating on one side of the device, indicating no issues there. However, on the opposite side, it detected a short circuit near a connector that had been previously noted as missing.
What steps were taken to attempt to fix the device?
-The technician cleaned and prepared the affected area, applied flux, and attempted to remove the damaged components. They also planned to replace the damaged parts to resolve the short circuit issue.
What was the technician's stance on handling such repairs?
-The technician emphasized the importance of professional diagnosis and repair, suggesting that devices should be taken to reputable places with the right equipment, even if not to their service, to avoid further damage.
What was the ultimate goal of the repair process described in the video?
-The ultimate goal was to recover data from the device, rather than a complete repair, by ensuring that the device could at least power on for data extraction.
What caution did the technician offer regarding DIY repairs?
-The technician warned that attempting repairs without proper knowledge or tools could lead to further damage, making the device more difficult to recover or repair later.
What advice was given regarding data backup?
-The technician stressed the importance of regularly backing up data to prevent loss due to device failure, loss, or accidental deletion, highlighting that it's never an overstatement to back up data multiple times.

Outlines

00:00

👀 Fraudulent Repair Claim

The video script opens with the narrator expressing frustration over a Galaxy S21 Ultra device that was supposedly damaged by water. The narrator accuses the previous repair shop of fraud, stating that the CPU was marked as defective without proper inspection. The narrator then proceeds to examine the device, demonstrating that the actual issue was a short circuit in the circuit board, which was disguised by the removal of several key components.

05:02

🔍 Investigating the Short Circuit

The narrator continues their investigation, pinpointing the exact location of the short circuit on the circuit board. The narrator proceeds to carefully remove the damaged components, revealing the underlying issue. They then test the device by temporarily supplying power, which successfully boots the device, confirming that the CPU and memory are still functional.

10:02

📢 Importance of Data Backup

The narrator emphasizes the importance of data backup, as devices can be lost, damaged, or malfunction unexpectedly. They advise the audience to back up their data regularly, stressing that it can never be overdone. The video concludes with a call to action for viewers to subscribe, like the video if it was helpful, and a final note of gratitude.

Mindmap

Keywords

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Highlights

Discussion on the impact of AI on the future of work and how to ensure benefits are shared broadly.

Explanation of cooperative oversight models for AI to align incentives and ensure accountability.

Proposed policies like universal basic income to cushion economic disruption from automation.

Warning about potential misuse of AI for surveillance and social control without safeguards.

Argument that AI progress requires thoughtful system design and ethics, not just better algorithms.

Discussion of ways to counter algorithmic bias and ensure fairer machine learning models.

Proposed regulation and certification processes for AI systems to build public trust.

Predictions about future applications of AI in fields like healthcare, transportation, education.

Concerns about potential loss of human agency and control as AI becomes more advanced.

Arguments for greater transparency and explainability in AI decision-making processes.

Discussion of strategies to ensure AI development serves broad social good.

Warnings about the risks of an AI arms race without cooperation between nations.

Calls for inclusive governance of AI to represent diverse voices and perspectives.

Arguments for shaping the ethics of AI through education and public discourse.

Emphasis on the need for wisdom and human judgment alongside continued AI progress.