Archive August 31, 2018

Dell Laptop 5520 Multi Problems

6 Comments on Dell Laptop 5520 Multi Problems

Dell Laptop 5520 Multi Problems

📌 Product: – Laptop Dell Inspiron 5520
🤔 Problem: – No Power and connection Adopter Light of Adopter goes off(19 V Short).
🛠 Motherboard P/N: – LA-82413
🔍 💊💉 Diagnosis & Solutions: –

Check and found one pf short in 19V Line remove this 19 Volt problem solve but 3/5 not generating.

Customer was to busy and he bring it to my home for repair next day he has a presentation in office. So I need quick solution . For schematic ask on SK Bhashir Sir Telegram paid group sir provide quick support. Then I started my diagnosis for 3/5 IC requirement all are ok only en-trip is not tiger so check ENTRIP origin found Q201 controlling this ENTRIP and  it’s base not get any voltage whether customer have no time so I remove it and short Pin 1 with 3 ENTRIP generated 3/5 OK .

After providing NBSWON Laptop Started and in USB/Keyboard get LED Blink  so as theoretically display is generated.

But after connecting Display there DIM display issue. so again check for LVDS requirements fond DISPOFF have no voltage so again not put jumper from 3VS to this section. Display back-light come . I have provide it to customer he is happy problem resolved.

**Only Jumper Work done due to customer have not time but I suggest every one find why this signal and voltage not come to actual location and solve . Jumper solution is only quick remedy not permanent solution .

 

 

Printer is continuously feeding blank sheets

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HP Laser Printer is continuously feeding blank sheets Solution 
If hp/canon Laser printer is continuously feeding blank sheets of paper (meaning that it will just keep spitting out blank sheets without stopping, even when you power it off and back on) you probably have a sticking pickup solenoid.  The solenoid is an activator for the paper pickup drive assembly, it is usually about as big as a thumbnail, and it’s a metallic device with a spring and a hook which clips onto the pickup roller drive gear.  These solenoids “click” on and off constantly to allow the gear to spin and drive the paper feed. There is a rubber sound dampening pad on the solenoid, over time the rubber pad tends to wear away and you’re left with sticky glue residue (or a magnetized surface) and a dysfunctional solenoid. When a solenoid malfunctions, in the worst cases the solenoid never releases and the pickup drive gear spins forever, so paper will continuously get picked up and fed through.  The pages are blank because there is no real print job being processed.For some printer models the solenoid is accessible, so if you’re the ambitious type you may be able to disassemble your printer and replace the solenoid (or at least clean the sticky solenoid and apply some fresh felt).

HP Pavilion g6 No Display.

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Laptop :- HP Pavilion g6 (DA0R13MB6E1)
Problem :- No Display.
Diagnosis :- Run With DC Power Suply. Found Amp Rating is 1.30amp. So 1st dry sholder the board(Same Probelm) . Then Programe both Bios Display come but with in 30 sec. again no display. Then Replace the Main BIOS ic and programe it. Problem Solved.

Aspire One D257 No Power

3 Comments on Aspire One D257 No Power

đź“Ś Product: – Laptop Acer Aspire One D257
🤔 Problem: – Some time power on some time not power on.
đź›  Motherboard P/N: – DAOZE6MB6E0
🔍 Diagnosis: – Checks and found one bipolar transistor in thermal protection section getting excess heat.
đź’Šđź’‰ Action done: – Replace this transistor. Problem resolved.

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