СДОХ БРОНЗОВЫЙ БП от Cougar BXM мощностью 700W [CGR BXM-700] не отходив гарантию из DNS

Summary

This video script details a repair on a Cougar 700W power supply that failed unexpectedly. The host analyzes the issue, determines a diode is shorted, replaces it with an identical part, and successfully brings the power supply back to working order. Throughout the repair, precautions are taken to avoid damage and retain the warranty seal. The video aims to provide an interesting and educational look inside a PC power supply unit.

Takeaways

• 😟 The video discusses issues with a computer power supply that stopped working
• 🔧 The power supply is disassembled to diagnose the problem
• ⚡ There is discussion of electrical safety when working with power supplies
• 🔬 The failure is traced to a faulty diode component
• 🛠 The faulty diode is replaced with a new matching part
• ✅ Testing shows the repaired power supply now works again
• 💡 The self-repair avoided the need for an expensive service visit
• 🎉 The power supply has been rescued and returned to reliable function
• 🤔 Viewers are asked if they would attempt a similar repair or not
• 👍 Overall a successful diagnosis and repair outcome

Q & A

What was the problem with the power supply unit?

The power supply unit would turn on but then immediately shut off when a graphics card was connected. It seemed to go into protection mode, unable to handle the load.

What certification and wattage did the power supply unit have?

The power supply unit was a Cgar BXM 700 model certified for 80+ Bronze efficiency standard. It was rated for 700 watts.

What was the root cause of the failure?

The root cause was a failed SS210 100V 2A Schottky protection diode that had shorted.

Was the technician able to repair the unit?

Yes, the technician was able to diagnose the fault and replace the failed diode, repairing the power supply successfully.

How did the technician diagnose the problem?

Through methodical troubleshooting - checking outputs, disassembling to inspect the board, testing components, and measuring resistance to isolate the fault.

Could the unit still be repaired under warranty?

Possibly yes, since the technician was careful not to damage the warranty seal during disassembly.

What safety precautions did the technician highlight?

Noting the charged capacitors that can give a serious shock even when disconnected from power.

Did the technician validate the repair afterwards?

Yes, by load testing the unit after reassembly to ensure outputs were correct and stable under load.

What was used to initially diagnose the turned-off power supply?

A power supply tester was used to show that the unit would turn on but then immediately go into protection shutdown.

Could this failure happen in other power supply units?

Yes, depending on the design other units could potentially fail in a similar way with a shorted protection diode.