CompTIA · A+ 220-1201
Troubleshooting displays and mobile devices
A+ 220-1201 · Lesson 21 of 22 · 2:23:56
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In this lesson
Prepare for the CompTIA A+ Core 1 (220-1201) exam. In this lesson: input sources and cabling, fuzzy, distorted, and dim images, dead pixels and burn-in, audio over HDMI, projector bulbs, shutdowns, and keystone, battery health and swollen batteries, charging and ports, broken screens, digitizers, cursor drift, styluses, connectivity, liquid damage, overheating, malware, degraded performance, and app installs. Includes three original practice questions.
Preview the topics
- A projector shuts off by itself after about twenty minutes, and its fan is very loud. What is the most likely cause?
- A dentist’s tablet case has started to bulge, and the screen is lifting at one edge. What should the technician do?
- A reception monitor shows no signal after its computer moved to a new desk, and the monitor’s power light is on. What should the technician check first?