Home / CompTIA / 220-1101

Question list

List of questions

Question 1

(1)

Which of the following would an administrator use to migrate virtual machines from on premises to the cloud?

Question 2

(1)

A user, who is attempting to give a presentation via a projector in a conference room, reports the projector has video but no audio. Which of the following will MOST likely resolve the issue?

Question 3

(0)

Which of the following standards supports MIMO technology?

Question 4

(0)

A user requested upgrades to a company-Issued laptop to increase its performance while working with a large database stored on drive C. Which of the following tasks should a systems administrator co

Question 5

(0)

Which of the following technologies can allow multiple networks to traverse a switch?

Question 6

(0)

A company just bought a printer capable of automatically printing on both sides of the paper After installation, however, the technician can only print on both sides of the paper manually. Which of

Question 7

(0)

An online retailer would like to add capacity to support increased sales. Additional servers have been installed. Which of the following should be used to ensure each new server is being properly ut

Question 8

(0)

Which of the following utilizes TCP ports 20/21 and transfers data in cleartext?

Question 9

(0)

A customer is using a satellite internet connection that is experiencing slowness. A technician notices high latency while pinging, but the download test is performing perfectly with very good downl

Question 10

(0)

An organization maintains various record types, including health and criminal justice records. Which of the following cloud environments is the organization MOST likely to use to limit the attack su

Question 544 - 220-1101 discussion

A technician is troubleshooting a laptop that displays a blank screen when the user turns it on. The technician shines a flashlight into the LCD and sees a faint image. Which of the following is the most likely cause of the issue?

Defective inverter

Incompatible video driver

Incorrect input source

Burned-out bulb

Suggested answer: A

Explanation:

The most likely cause of the issue is a defective inverter. An inverter is a device that converts the direct current (DC) power from the laptop battery or adapter to the alternating current (AC) power that the LCD backlight bulb needs. The backlight bulb is a fluorescent lamp that illuminates the LCD screen and makes the image visible. If the inverter is defective, it may not provide enough power to the backlight bulb, or it may stop working intermittently. This can result in a dim, dark, or blank screen, even though the LCD panel is still functioning and displaying a faint image.

To troubleshoot a defective inverter, the technician can follow these steps:

Connect an external monitor to the laptop and check if the image is displayed normally. If the external monitor works fine, it means that the laptop video card and driver are not the cause of the issue.

Shine a flashlight into the LCD screen and look for a faint image. If the image is visible, it means that the LCD panel is not the cause of the issue.

Check the inverter cable and connector for any damage, loose connection, or corrosion. The inverter cable is a thin wire that runs from the laptop motherboard to the inverter board, which is usually located at the bottom of the LCD screen. The inverter connector is a small plug that connects the inverter cable to the inverter board. The technician can try to reseat the inverter cable and connector, or replace them if they are faulty.

Check the inverter board for any damage, burn marks, or blown fuses. The inverter board is a small circuit board that contains the inverter and other components. The technician can try to test the inverter board with a multimeter, or replace it if it is defective.

How to fix laptop screen flickering problem - Windows 101

How to Fix a Laptop Screen That's Flickering, Black, or Has Lines2

How to Fix a Dim Laptop Screen | Techwalla3

How to Test a Laptop Inverter | It Still Works4

How to Replace a Laptop Inverter Board | Chron.com5

Show Answer

asked 02/10/2024

Neha Dua

41 questions

Your answer: A B C D

0 comments

Sorted by