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How to Repair MacBook - Schematic Reading - PP3V42_G3H & SMC_RESET_L

How to Repair MacBook - Schematic Reading - PP3V42_G3H & SMC_RESET_L

This is the third part of MacBook repairing videos in which we’ll continue analyzing Apple laptop schematics. And on this video you’ll see how the very important voltage, PP3_V42_G3H and...

Repair Laptop LCD Backlight – VPCF1 Backlight Failure

Repair Laptop LCD Backlight – VPCF1 Backlight Failure

In this video, there is a Sony VPCF1 laptop with a problematic screen backlight which means there is image but the screen is dark. These kinds of problems can originate from “Inverter” or “High...

What to Do When a Laptop turns ON with Not Display?

What to Do When a Laptop turns ON with Not Display?

Voltage Rail table is on page 2 or 3 of most schematics. This table is very valuable for laptop repairmen because it shows the presence of different voltages in order of priority on the...

Lenovo B590-Solve B+ short circuit

Lenovo B590-Solve B+ short circuit

In this video, laptop input has shorted circuit and by plugging in the adaptor, voltage gets disconnected. You’ll see how to troubleshoot the problem by the method of injecting voltage after...

Capacitor Failure in Repairing Graphic Card

Capacitor Failure in Repairing Graphic Card

We have a Graphic card that its image gets pixelated. After performing initial tests, we realized that the capacitors have failed. In the video below, you will see important tips in changing...

Repairing Water Spilled Asus Laptop-Random Turn ON

Repairing Water Spilled Asus Laptop-Random Turn ON

In this video we have an Asus X541U laptop which apparently turns ON randomly and when I checked the board, I found water spillage marks on it. And due to the fact that the oxidation of boards...

How to Ohm Check Laptop Motherboards using Digital Multimeters

How to Ohm Check Laptop Motherboards using Digital Multimeters

When we are asked technical questions on the Technical Support section of the website, we realize many members have not performed the initial tests or have just become acquainted with the website...

How to Repair laptop CPU Fan

How to Repair laptop CPU Fan

In this video, we have a Sony S series laptop that we did not find its fan on the market. In this short video, we will solve the problem so that if you didn’t find a device’s fan, you can fix the...

How to Solve Not Detecting VGA Port Problem in SAMSUNG Monitor

How to Solve Not Detecting VGA Port Problem in SAMSUNG Monitor

In this video, there is an SA300 Samsung monitor that has 2 DVI and VGA ports and by plugging in the VGA cable, it doesn’t have image (display). This problem is a very common one in Samsung...

basic electronics in laptop repairing

basic electronics in laptop repairing

It is a known fact that if someone wants to learn something -and anything- it would be best to learn it from the beginning and basics to intermediate and then at last to the advanced or...

How to Test Dual MOSFETs

How to Test Dual MOSFETs

There are some MOSFETs on some boards, similar to the picture below, which are so similar to single MOSFETs. In fact they are single High and Low MOSFETs that come in one package. How can you...

Repairing Laptop LED Backlight | Backlight Failure

Repairing Laptop LED Backlight | Backlight Failure

We have captured and published a couple of videos related to repairing LCD backlight but this one is a bit different ;). On the video below, the laptop has dark backlight and the LVDS flat cable...

Disabling Onboard RAM of V5-572G Laptop

Disabling Onboard RAM of V5-572G Laptop

Disabling onboard RAM of V5-572G laptop is tested and approved by Dr-Bios.com technical team and the solution is also shared on the website for the first time. Enjoy 🌸💚 ASPIRE V5-572G MODEL...

Macbook Pro A1286 DIS TO UMA

Macbook Pro A1286 DIS TO UMA

In this article we’re going to show you how to convert MacBook Pro a1286 2011 - 820-2915 Dis to UMA by applying some simple changes. All you need to do is to remove Graphic Chip and connect wire...

How To Measure Drawn Amperage Of Systems

How To Measure Drawn Amperage Of Systems

Sometimes a power supply or an adaptor has no power to boot up your system but you want to know how much current your system needs to switch ON?! In this kind of situation, you need to measure...

Solve "Manufacture Programming Mode Is In Unlock Mode" Error

Solve "Manufacture Programming Mode Is In Unlock Mode" Error

We usually face “Serial Number” or other similar errors after programming Bios in HP laptops. We have a video on the website in which we have fully shown you how to solve the error. But the...

How To Solve CPU Power Voltage Absence In Z570 Lenovo Laptop

How To Solve CPU Power Voltage Absence In Z570 Lenovo Laptop

In this video, we have a Z570 Lenovo Laptop which switches ON as soon as plugging in its adaptor. All the voltages are present except for CPU power voltage. We’ll check CPU power block and you can...

How To Repair Backlight Problem In Fujitsu AH54

How To Repair Backlight Problem In Fujitsu AH54

In this article we have a Fujitsu AH54 laptop that turns ON but with no backlight on display. As there this model didn’t have any schematic files, we had to use LED panel to recognizing jack pins...

How to Change Mac Address on Modems

How to Change Mac Address on Modems

In this article we are going to teach you how to change the Mac address on Modem devices :giggle: 💚 Most of the times, to solve software problem of a modem, it is necessary to program Flash IC...

How To Repair Monitor Part 15 T-CON Board

How To Repair Monitor Part 15 T-CON Board

This is the 15th video of repairing monitor in which we have analyzed the important and complicated board of screens, T-CON board. In this video you’ll be familiar with the concept of image...

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