Elvis P. Ambait
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Elvis P. Ambait posted a new post. a week ago
64GB USB ALL IN ONE TOOLS FOR TECHNICIANSandisk 64GB Original USB + 12GB AIO Partitioned Toolset
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Arnold Abarratigue and
Elvis P. Ambait are now connected a week ago -
adrian de leon and
Elvis P. Ambait are now connected a week ago -
Manolito I. Joaquin and
Elvis P. Ambait are now connected a week ago -
Elvis P. Ambait posted a new lesson. 2 weeks ago
BIAS VOLTAGE, POWER SWITCH LOGI, AND SYSTEM SWITCHING🔍 B+_BIAS in Compal LA-9104P Motherboard (Dell Inspiron 3521) In the LA-9104P schematic, B+_BIAS is a derived voltage rail from the main adapter or battery…
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Elvis P. Ambait posted a new lesson. 2 weeks ago
COMMON USE PWM IN 3V AND 5V POWER RAILS⚙️ Common PWM Controllers for 3V/5V Rails These ICs are responsible for generating stable 3.3V and 5V rails from the adapter’s 19V input using buck…
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Elvis P. Ambait posted a new lesson. 2 weeks ago
3V & 5V POWER RAILS TROUBLESHOOTINGHere’s a complete troubleshooting guide for the 3V and 5V power rails in laptops—especially useful for diagnosing “no power,” “no display,” or “dead board” scenarios.…
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Elvis P. Ambait posted a new lesson. 2 weeks ago
DAY 13 - STANDBY VOLTAGESHere’s a deep dive into how standby voltages work in laptops and TVs, and how to troubleshoot them effectively. These voltages are critical for powering…
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Elvis P. Ambait posted a new lesson. 2 weeks ago
DAY 12 HOW CHARGING CIRCUIT WORKS AND TROUBLESHOOTINGhow a laptop charging circuit works, especially in modern designs like Dell, and how to troubleshoot it effectively. ⚡️ How Laptop Charging Circuits Work Laptop…
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Elvis P. Ambait posted a new lesson. 2 weeks ago
DAY 11 DCIN SECTION_PSID CIRCUIT_HOW CHARGING CIRCUIT WORKSThe PSID (Power Supply Identification) circuit in Dell laptops is a specialized logic system designed to detect and authenticate the power adapter. If this circuit…
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