I have had to disassemble quite a lot of laptops as a tech. This was mostly done to reseat the batteries on these laptops as troubleshooting. I do this on laptops that do not power on at all and a lot of the time it does work. One must be careful when taking laptops apart to not break any components, lose screws, or touch the circuitry.
Sometimes, our televisions might stop working because of wear and tear or maybe a storm knocked the power out suddenly and one of the inside components went out. I have fixed three televisions so far by replacing either their main system board, power supply board, or the T-con board. I didn't study electrical but just by looking at the symptons and doing research, I was able to fix them.
Smart phone or tablet disassemblies mostly were because of cracked screens. Most of the time to open them, you need to use a heat gun to heat the sticky adhesive that keeps the screen on in place. After that is done, then it is just disconnecting the connectors and then replacing the screen.
As a field tech, we are exposed to more network-related issues than a campus tech would. The network operations center can see down devices using Solarwinds and they will create a ticket. The field techs are dispatched as soon as possible as these are high priority issues. Issues can range anywhere between a simple SNMP card reseat at a UPS to whole network being down due to a fiber break somewhere away from the premises.
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At my current job, we use a ticketing system called Footprints. People needing technology help will call the help desk and the help desk will create tickets. Those tickets will be routed to the correct team that can take care and resolve the issue. Tickets serve a documentation that something was actually done and they can serve as resolution lookups in case another tech has a similar situation.
As a high school tech, I was in charge of the technology inventory. Students, teachers, and staff would be issued laptops. All that would have to be entered into TipWeb/Asset Management, our inventory system. I would also keep documentation on Excel spreadsheets but Asset Management was mainly what we used whenever we needed to find something. Assets were also assigned to rooms if they were not assigned to people. Such assets would be the likes of projectors, printers, and document cameras.
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